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I need help with the following problems, I have done many of these over and over, I just do not know the formulas. I was hoping that I can get an answer, and the steps to solve each of the following question. I do want the answer, that is a given; but I also want to learn how to do them for the future. That is why the steps are as a important as the answer. I do have a deadline, and would need this by friday. Let me know if this is possible.

1) Find the value of Y for the given values of X and Z

Y=x+z X=4, Z=15

The value is=

2)The cost of driving a car includes both fixed costs and mileage costs. Assume that it costs $170.20 per month for insurance and car payments and $0.49 per mile for gasoline, oil and routine maintenance.

a) find the values for m and b so that y=mx+b models the monthly cost of driving the car X miles.

b)what does the value of b represent.

3)Graph the equation using the X and Y intercepts.

X - Y =1

2 3

4) Solve the linear inequality.

6-5x>7

9

5)A running back carries the ball five times. Find his total yardage if the carries were, 9,-3,-1,14, and 7 yards.

The total yardage is=

6)Write the function as a set of ordered pairs. Give the domain and range of f.

F(a)=t, f(b)=p, f(c)=r, f(d)=t

7)Find the slope if it exists, of the line containing the pair of points.

(-13, -15) and (-14,-19)

8)Use the distributive property to rewrite the expression

(b+6)3

9)A certain region is losing about 17 million acres of rain forest each year.

a) find the linear function f that calculates the change in acres of rain forest in millions in x years.

b)Find f(7) and interpret the result.

10)Parking in a student parking lot costs $3 for the first half hour and $1.75 for each hour therafter. A partial hour is charged the same as a full hour. What is the longest time that a student can park in this lot for $10.

11)A tugboat goes 180 miles upstream in 15 hours. The return trip downstream takes 5 hours. Find the speed of the tugboat without a current and the speed of the current.

12)An investor invested a total of $2600 in two mutual funds. One fund earned a 6% profit while the other earned a 3% profit. If the investors total profit was $105, how much was invested in each mutual fund?

6%=

3%=

13)Solve

D=ABC for C

C=

14)Solve the system of linear equations by graphing

2x-y=0

4x-y=8

Type ordered pair

15)Use the formula d=rt find the value of the missing variable.

d=190 ft, t=38 seconds

r=

16)The table lists the percentage of households that were 3 person households during selected years.

Year 1970 1980 1990 2000

Percent 17.2 17.5 17.1 16.6

a)what was the percentage in 2000

b)calculate the average percentage

17) A certain mountain has an elevation of 19906 feet. In 1918, the glacier on this peak covered 6 acres. By 2001 this glacier had melted to only 1 acre.

a) assume that this glacier melted at a constant rate each year. Find this yearly rate.

b) use your answer from part (a) to write a linear equation that gives the acreage A of this glacier T years past 1918.

18)Find the slope intercept form for the line satisfying the following conditions.

X intercept 2, y intercept 4

5

19)Find the area of the triangle.

Base 1 2 yards and height 5 yards.

5 6

20)When the cost of a car is multiplied by 0.04 the result is $1780. Find the cost of the car.

21)Solve the solution and check the solution.

-7(t-8)-(t+3)=8

22)The number N of state and federal inmates in millions during year X, where X>2002 can be approximated by the following formula.

N=0.05x-98.90

Determine the year in which there were 1.3 million inmates.

23)In 1980, median family income was about 19000 and in 2000 it was about 42000

a) find the slope of the line passing through the points (1980,19000) and (2000,42000)

b)Interpret the slope as a rate of change.

c) if this trend continues, estimate the median family income in 2007.

24)A family refers to a group of two or more people related by birth, marriage, or adoption who reside together. In 2000, in county A, the average family net worth was $220,000 and there were about 6.3*10 (7 is an exponent) families. Calculate the total family net worth in county A in 2000.

25)A barrel contains 173 gallons of water and is being drained at a constant rate of 10 gallons per minute.

Write and equation that models the number of gallons, G after T minutes.

1) Find the value of Y for the given values of X and Z

Y=x+z X=4, Z=15

The value is=

2)The cost of driving a car includes both fixed costs and mileage costs. Assume that it costs $170.20 per month for insurance and car payments and $0.49 per mile for gasoline, oil and routine maintenance.

a) find the values for m and b so that y=mx+b models the monthly cost of driving the car X miles.

b)what does the value of b represent.

3)Graph the equation using the X and Y intercepts.

X - Y =1

2 3

4) Solve the linear inequality.

6-5x>7

9

5)A running back carries the ball five times. Find his total yardage if the carries were, 9,-3,-1,14, and 7 yards.

The total yardage is=

6)Write the function as a set of ordered pairs. Give the domain and range of f.

F(a)=t, f(b)=p, f(c)=r, f(d)=t

7)Find the slope if it exists, of the line containing the pair of points.

(-13, -15) and (-14,-19)

8)Use the distributive property to rewrite the expression

(b+6)3

9)A certain region is losing about 17 million acres of rain forest each year.

a) find the linear function f that calculates the change in acres of rain forest in millions in x years.

b)Find f(7) and interpret the result.

10)Parking in a student parking lot costs $3 for the first half hour and $1.75 for each hour therafter. A partial hour is charged the same as a full hour. What is the longest time that a student can park in this lot for $10.

11)A tugboat goes 180 miles upstream in 15 hours. The return trip downstream takes 5 hours. Find the speed of the tugboat without a current and the speed of the current.

12)An investor invested a total of $2600 in two mutual funds. One fund earned a 6% profit while the other earned a 3% profit. If the investors total profit was $105, how much was invested in each mutual fund?

6%=

3%=

13)Solve

D=ABC for C

C=

14)Solve the system of linear equations by graphing

2x-y=0

4x-y=8

Type ordered pair

15)Use the formula d=rt find the value of the missing variable.

d=190 ft, t=38 seconds

r=

16)The table lists the percentage of households that were 3 person households during selected years.

Year 1970 1980 1990 2000

Percent 17.2 17.5 17.1 16.6

a)what was the percentage in 2000

b)calculate the average percentage

17) A certain mountain has an elevation of 19906 feet. In 1918, the glacier on this peak covered 6 acres. By 2001 this glacier had melted to only 1 acre.

a) assume that this glacier melted at a constant rate each year. Find this yearly rate.

b) use your answer from part (a) to write a linear equation that gives the acreage A of this glacier T years past 1918.

18)Find the slope intercept form for the line satisfying the following conditions.

X intercept 2, y intercept 4

5

19)Find the area of the triangle.

Base 1 2 yards and height 5 yards.

5 6

20)When the cost of a car is multiplied by 0.04 the result is $1780. Find the cost of the car.

21)Solve the solution and check the solution.

-7(t-8)-(t+3)=8

22)The number N of state and federal inmates in millions during year X, where X>2002 can be approximated by the following formula.

N=0.05x-98.90

Determine the year in which there were 1.3 million inmates.

23)In 1980, median family income was about 19000 and in 2000 it was about 42000

a) find the slope of the line passing through the points (1980,19000) and (2000,42000)

b)Interpret the slope as a rate of change.

c) if this trend continues, estimate the median family income in 2007.

24)A family refers to a group of two or more people related by birth, marriage, or adoption who reside together. In 2000, in county A, the average family net worth was $220,000 and there were about 6.3*10 (7 is an exponent) families. Calculate the total family net worth in county A in 2000.

25)A barrel contains 173 gallons of water and is being drained at a constant rate of 10 gallons per minute.

Write and equation that models the number of gallons, G after T minutes.

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