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Final

Part 1 of 15 – 4.0/ 4.0 Points

Question 1 of 254.0/ 4.0 Points

Find the missing coordinate so that the point (-5, ) is on the line y = 2x – 5.

A.The missing coordinate is -5.

B.The missing coordinate is 5.

C.The missing coordinate is -15.

D.None of these.

E.The missing coordinate is 0.

Part 2 of 15 – 8.0/ 12.0 Points

Question 2 of 254.0/ 4.0 Points

Find the missing coordinate to complete the ordered pair so that the point ( , 9) is on the line 3x + y = -3.

A.None of these.

B.4

C.-2

D.-24

E.-4

Question 3 of 250.0/ 4.0 Points

Find the slope of the line passing though the points (-1, -5) and (-2, -2).

A.None of these.

B.m = 3

C.m = 7/3

D.m = – 1/3

E.m = – 3

Question 4 of 254.0/ 4.0 Points

A ball is thrown straight up from an initial height of 112 feet with an initial speed of 96 feet per second. The graph shows the height, in feet, after t seconds.

Use the graph to determine the height of the ball after 1.5 seconds.

A.approximately 225 feet

B.approximately 200 feet

C.None of these.

D.approximately 150 feet

E.approximately 250 feet

Part 3 of 15 – 4.0/ 4.0 Points

Question 5 of 254.0/ 4.0 Points

Write a general formula to describe the variation if v varies directly with t and v = .4 when t = . 2.

A.v = t + .2

B.v = 2t

C.

D.

E.None of these

Part 4 of 15 – 4.0/ 4.0 Points

Question 6 of 254.0/ 4.0 Points

Choose the equation of the line with a slope of 2/3 and a y-intercept of (0, 2).

A.3x – 2y = – 6

B.2x – 3y = – 2

C.3x – 2y = – 2

D.None of these.

E.2x – 3y = – 6

Part 5 of 15 – 8.0/ 12.0 Points

Question 7 of 254.0/ 4.0 Points

Choose the graph of the linear inequality:

A.

B.

C.None of these.

D.

E.

Question 8 of 250.0/ 4.0 Points

Choose the equation of a line passing through the point (2, 2) and perpendicular to the line:

A.

B.y = 5x – 12

C.None of these.

D.y = – 5x + 2

E.y = – 5x + 12

Question 9 of 254.0/ 4.0 Points

Evaluate the following expression if x = – 4:

A.- 39

B.41

C.- 87

D.89

E.None of these.

Part 6 of 15 – 4.0/ 4.0 Points

Question 10 of 254.0/ 4.0 Points

When making a telephone call using a calling card, a call lasting 6 minutes costs $2.75. A call lasting 16 minutes costs $6.75. Find a linear function that relates the cost, C, of a making a call to the length, x, of the call, treating length of the call as the independent variable.

A.C = -.4x – 12.25

B.None of these.

C.C = .4x + .35

D.C = -.4x + 5.15

E.C = -.4x – 9.25

Part 7 of 15 – 4.0/ 4.0 Points

Question 11 of 254.0/ 4.0 Points

True or false:

(4, -2) is a solution to the system of equations:

x + y = – 6

x – y = – 2

True

False

Part 8 of 15 – 8.0/ 12.0 Points

Question 12 of 254.0/ 4.0 Points

Choose the graph of this system of inequalities:

A.

B.None of these.

C.

D.

E.

Question 13 of 250.0/ 4.0 Points

Solve the following system of equations for x:

4x – 2y = 7

-8x + 4y = – 28

A.These equations represent the same line and there are infinite solutions.

B.These equations represent parallel lines and there is no solution.

C.None of these.

D.x = 2

E.x = 4/21

Question 14 of 254.0/ 4.0 Points

Solve the following system of equations for x:

x + 7y = 45

2x + 6y = 34

A.x = 4

B.x = – 4

C.None of these.

D.x = 8

E.x = – 5

Part 9 of 15 – 4.0/ 4.0 Points

Question 15 of 254.0/ 4.0 Points

Solve this system of equations for x:

A.x = 2

B.x = – 4

C.None of these.

D.x = 4

E.x = 3

Part 10 of 15 – 4.0/ 4.0 Points

Question 16 of 254.0/ 4.0 Points

Simplify:

A.None of these.

B.

C.

D.

E.

Part 11 of 15 – 12.0/ 12.0 Points

Question 17 of 254.0/ 4.0 Points

A ladder that is 17 feet long is 8 feet from the base of a wall. How far up the wall does the ladder reach?

A.approximately 18.79 feet

B.225 feet

C.3 feet

D.15 feet

E.None of these.

Question 18 of 254.0/ 4.0 Points

Multiply:

A.4

B.

C.22

D.10

E.None of these.

Question 19 of 254.0/ 4.0 Points

Determine the distance between the points (2, 5) and (7, 17).

A.The distance is 15 units.

B.The distance is 12/5 units.

C.The distance is 12 units.

D.The distance is 13 units.

E.None of these.

Part 12 of 15 – 4.0/ 4.0 Points

Question 20 of 254.0/ 4.0 Points

Rationalize the denominator:

A.

B.-28

C.

D.

E.None of these.

Part 13 of 15 – 4.0/ 4.0 Points

Question 21 of 254.0/ 4.0 Points

Solve for x:

A.{-7, 7}

B.{24.5}

C.None of these.

D.{-8, 8}

E.{7}

Part 14 of 15 – 12.0/ 12.0 Points

Question 22 of 254.0/ 4.0 Points

Solve for x:

A.{5, 13}

B.None of these.

C.{-13, -5}

D.{-7, 25}

E.No solution

Question 23 of 254.0/ 4.0 Points

Solve for x:

Choose the smaller of the two answers.

A.There is only one answer and it is -7.

B.There is no answer in the real numbers.

C.There is only one answer and it is 7.

D.The smaller answer is zero.

E.None of these.

Question 24 of 254.0/ 4.0 Points

Solve for x:

Choose the smaller of the two answers.

A.The smaller answer is 7.

B.The smaller answer is -4.

C.The smaller answer is 4.

D.None of these.

E.The smaller answer is -7.

Part 15 of 15 – 4.0/ 4.0 Points

Question 25 of 254.0/ 4.0 Points

The position of an object moving in a straight line is given by the following formula where s is in meters and t is the time in seconds the object has been in motion.

How long (to the nearest tenth) will it take the object to move 8 meters

A.Approximately 10.4 seconds

B.Approximately 2.9 seconds

C.Approximately 9.1 seconds

D.Approximately 5.9 seconds

E.None of these.

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