Solve the problem.A man 6 ft tall walks at a rate of 5 ft/s away from a lamppost that is 16 ft high. At what rate is the length of his shadow changing when he is 30 ft away from the lamppost?
A. 3 ft/s
B. 
ft/s
C. 
ft/s
D. 25 ft/s
Answer: A
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Solve the problem.A pool of possible jurors consists of 12 men and 16 women. How many different juries consisting of 5 men and 7 women are possible?
A. 12,232 B. 9,060,480 C. 30,421,755 D. 1,352,078
Solve.If the voltage, V, in an electric circuit is held constant, then the current, I, is inversely proportional to the resistance, R. If the current is 350 milliamperes when the resistance is 4 ohms, find the current when the resistance is 28 ohms.
A. 50 milliamperes B. 200 milliamperes C. 2450 milliamperes D. 2443 milliamperes
The object shown in the figure is a cube (all edges are equal in length).
?
?
Suppose the length of the diagonal AH in the figure is 
feet. What is the length of edge AB?
Fill in the blank(s) with the appropriate word(s).
Graph the inequality.y > x2 + 4
A. 
B. 
C. 
D. 