Use the grid markers to indicate the location of Yorktown.
/ A. None of these.
/ B. C2
/ C. B3
/ D. B5
/ E. F3
Question 2 of 25 / 4.0 Points
Choose the equation of the graph:
/ A. None of these.
/ B. y = - 2x + 4
/ C. y = 2x - 3
/ D. y = 2x + 4
/ E. y = - 2x - 3
Question 3 of 25 / 4.0 Points
Choose the graph that would be created by plotting the intercepts of the equation 4x+ 8y = 16.
/ A.
/ B.
/ C.
/ D.
/ E. None of these.
Question 4 of 25 / 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 determinethe height of the ball after 3 seconds.
/ A. approximately 240 feet
/ B. approximately 256 feet
/ C. approximately 200 feet
/ D. approximately 225 feet
/ E. None of these.
Question 5 of 25 / 4.0 Points
Write a general formula to describe the variation if v varies directly with t and v = 2 when t = 5.
/ A.
/ B.
/ C. t = v + 3
/ D.
/ E. None of these.
Question 6 of 25 / 4.0 Points
What is the slope of a line parallel to the given line:
/ A. The slope is 4/3.
/ B. The slope is -4/3.
/ C. The slope is -3/4.
/ D. The slope is 4.
/ E. None of these.
Question 7 of 25 / 4.0 Points
Choose the equation of the line that passes through the point (- 4, - 8) and has a slope of zero.
/ A. y = - 8
/ B. y = - 4x - 8
/ C. None of these.
/ D. x = - 4
/ E. y = - 8x - 4
Question 8 of 25 / 4.0 Points
Rewrite the equation 3x + 2y = 12 in slope-intercept form.
/ A.
/ B.
/ C. None of these.
/ D.
/ E.
Question 9 of 25 / 4.0 Points
Choose the equation of a line passing through the point (3, 2) and perpendicular to the line:
/ A.
/ B. y = - 3x - 11
/ C. None of these.
/ D. y = - 3x + 11
/ E. y = 3x - 11
Question 10 of 25 / 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 = 2.5x -2.1
/ B. C = - 0.4 + 5.3
/ C. C = 0.4x + 0.35
/ D. C = 0.4x - 9.1
/ E. None of these.
Question 11 of 25 / 4.0 Points
Choose the number ofsolutions to the following system of equations.
9x - 3y = 4
-27x + 9y = - 8
/ A. The lines are parallel and there is no solution.
/ B. There is one solution.
/ C. The number of solutions cannot be determined from the information provided.
/ D. None of these.
/ E. The equations represent the same line. There are infinitely many solutions.
Question 12 of 25 / 4.0 Points
Solve the following system of equations for x:
x + y = - 1
y = -2x
/ A. x = 1
/ B. None of these.
/ C. x = -2
/ D. x = -1
/ E. x = 2
Question 13 of 25 / 4.0 Points
Solve the following system of equations for x:
- x- 6y = - 2
7x + 42y = 8
/ A. None of these.
/ B. These equations represent the same line and there are infinite solutions.
/ C. These equations represent parallel lines and there is no solution.
/ D. x = 2
/ E. x = 0
Question 14 of 25 / 4.0 Points
Choose the graph of this system of inequalities:
y < 4x - 3
/ A.
/ B.
/ C.
/ D. None of these.
/ E.
Question 15 of 25 / 4.0 Points
A chemist needs 130 milliliters of a 39% solution but has only 3% and 55% solutions available. How many milliliters of the3% solutionshould be used to get the desired solution?
/ A. She should use 70 mL of the 3% solution.
/ B. She should use 40 mL of the 3% solution.
/ C. None of these.
/ D. She should use 50 mL of the 3% solution.
/ E. She should use 90 mL of the 3% solution.
Question 16 of 25 / 4.0 Points
Simplify:
/ A.
/ B. None of these.
/ C.
/ D.
/ E.
Question 17 of 25 / 4.0 Points
Find the area of the rectangle:
/ A. approximately 291.9 sq. ft.
/ B. approximately 26.5 sq. ft.
/ C. None of these.
/ D. approximately 968 sq. ft.
/ E. approximately 88 sq. ft.
Question 18 of 25 / 4.0 Points
Simplify assuming that y is a positive number:
/ A.
/ B.
/ C.
/ D.
/ E. None of these.
Question 19 of 25 / 4.0 Points
Solve for x:
/ A. None of these.
/ B. x = 5/4
/ C. x = 100
/ D. x = 20
/ E. x = 25/4
Question 20 of 25 / 4.0 Points
Rationalize the denominator:
/ A.
/ B.
/ C. None of these.
/ D.
/ E. -8
Question 21 of 25 / 4.0 Points
Solve for x:
/ A. None of these.
/ B. {-15, 15}
/ C. {-16, 16}
/ D. {112.5}
/ E. {15}
Question 22 of 25 / 4.0 Points
Solve for x:
/ A.
/ B.
/ C.
/ D. None of these.
/ E.
Question 23 of 25 / 4.0 Points
Solve for x:
Choose the smaller answer.
/ A. No solution
/ B. The smaller answer is 6.
/ C. The smaller answer is 9.
/ D. None of these.
/ E. The smaller answer is -8.
Question 24 of 25 / 4.0 Points
Choose the graph of the function:
/ A.
/ B.
/ C.
/ D.
/ E. None of these.
Question 25 of 25 / 4.0 Points
Choose the graph of the function:
/ A.
/ B.
/ C.
/ D.
/ E. None of these.