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Part 6 of 25

Question 6 of 25

Determine which point is a solution to the inequality x + y > 8

A. (8, 0)

B. (-1, 3)

C. None of these

D. (0, 8)

E. (5, 5)

Part 7 of 25

Question 7 of 25 True or False:

Every vertical line is a function.

True False

Part 8 of 25

Question 8 of 25

Given the inequality: x < – 4, which quadrants would be partially shaded?

A. Quadrants III and IV

B. Quadrants II and III

C. Quadrants I and IV

D. Quadrants I and II

Part 9 of 25

Question 9 of 25

Write the equation of the line with a slope of 0 and containing the point (2, 3).

A. None of these.

B. x = 3

C. y = 0

D. y = 3

E. x = 2

Part 10 of 25

Question 10 of 25

0.0/ 4.0 Points

Find f(x – 1) when f(x) = 2x + 4

f(x – 1) =

Part 11 of 25

Question 11 of 25

Find the range of the relation: {(6, 4), (-10, 0), (-2, -2), (12, -10)}

A. range = {-10, -2, 0, 4}

B. range = {-10, -2, 12}

C. range = {-10, -2, 4, 12}

D. range = {0, 4}

Part 12 of 25

Question 12 of 25

The boundary of the graph of a linear inequality is either a solid or dashed line and the shaded area is either above or below the line.

Select the correct line and shading for the following inequality: y > 7

A. Dashed line; shaded above y = 7

B. Solid line; shaded above y = 7

C. Dashed line; shaded below y = 7

D. Solid line; shaded below y = 7

Part 13 of 25

Question 13 of 25

Find the equation of a line passing through the point (7, 6) and parallel to the line y = 3.

A. None of these.

B. x = 7

C. x = 6

D. y = 7

E. y = 6

Part 14 of 25

Question 14 of 25

Find f(-18) when f(x) = 10x + 30

A. – 150

B. 210

C. 150

D. – 210

E. None of these.

Part 15 of 25

Question 15 of 25

Write the equation of the line with slope = 3 and containing the point (3, 8).

A. y – 8 = mx – 3

B. None of these

C. y – 8 = x – 3

D. y = 3x – 1

E. y = 3x + 1

Part 16 of 25

Question 16 of 25

Write the equation of the line passing through the points (8, 8) and (1, 8).

A. y= x + 8

B. x = 8

C. y = 0

D. y = 8

Part 17 of 25

Question 17 of 25

Lisa needs to have her van towed. Ken’s Westside Towing charges a flat fee of $50 plus $3 per mile towed. Choose an equation that expresses Lisa’s towing cost, C, in terms of miles towed, m.

A. C = 3m – 50

B. C = 53m

C. C = 3m

D. None of these.

E. C = 3m + 50

Part 18 of 25

Question 18 of 25

Use your knowledge of the process of “Writing an equation given two points” to solve the following problem:

A vendor has learned that, by pricing his deep fried bananas on a stick at $1.50 , sales will reach 109 per day. Raising the price to $2.25 will cause the sales to fall to 73 per day. Let y be the number of the vendor sells at x dollars each. Write a linear equation that models the number of sold per day when the price is x dollars each.

The linear equation is y =

Part 19 of 25

Question 19 of 25

Determine the slope and the y-intercept for the equation – 3x + 2y = – 5.

A. y = (3/2)x – 5/2

B. y = (- 3/2)x – 5/2

C. y = – 1

D. y = (3/2)x + 5/3

Part 20 of 25

Question 20 of 25

Choose the equation of the line that has an undefined slope of – 4 and contains the point (3, – 4).

A. x = 3

B. y = 3

C. y = – 4

D. x = – 4

Part 21 of 25

Question 21 of 25

The formula for converting Celsius temperature to Fahrenheit is:

F = 1.8C + 32

Find the Fahrenheit temperature when the Celsius temperature is 21 degrees.

A. None of these.

B. -5.2

C. 5.8

D. 30.4

E. 69.8

Part 22 of 25

Question 22 of 25

The cost y, in dollars, to produce graphing calculators is given by the equation y = 48x + 2000, where x 4.0/ 4.0 Points is the number of calculators produced. What is the cost to produce 2000 calculators?

A. $96,000

B. None of these.

C. $94,000

D. $98,350

E. $98,000 Feedback:

Part 23 of 25

Question 23 of 25
The cost (in hundreds of dollars) of tuition at the community college is given by T = 1.25c + 4, where c is the number of credits the student has registered for.

If a student is planning to take out a loan to cover the cost of 15 credits, use the model to determine how much money he should borrow.

Notice that the dollar sign is already there! Also, remember, when writing answers that involve money, it is customary to use 2 decimal places!

To pay for exactly 15 credits, the student should borrow

Part 24 of 25

Question 24 of 25

Suppose the sales of a particular brand of appliance satisfy the linear model y = 200x + 800, where y represents the number of sales in year x with x = 0 corresponding to 1982, x = 1 corresponding to 1983, etc. Find the number of sales in 1987.

The number of sales in 1987 was .

Part 25 of 25

Question 25 of 25

The formula for converting Celsius temperature to Fahrenheit is:

F = 1.8C + 32

Find the Celsius temperature when the Fahrenheit temperature is 86 degrees. The Celsius temperature is degrees.