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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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