Solve the inequality.
< x
A. (7, ?)
B. (-?, 5) or (7, ?)
C. (5, 7)
D. (0, 5) or (7, ?)
Answer: D
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A prime number is a natural number that is larger than 1 and can only be divided exactly by itself and 1.Which of the following sets of numbers contains only prime numbers?
A. { 31, 29, 35 } B. { 25, 11, 31 } C. { 19, 29, 31 } D. { 11, 19, 12 } E. { 19, 15, 29 }
Rewrite the rational expression as an equivalent rational expression with the given denominator.
= 
A. 
B. 
C. 
D. 
Solve the problem.A weight attached to a spring is pulled down 4 inches below the equilibrium position. Assuming that the period of the system is 
second, determine a trigonometric model that gives the position of the weight at time t seconds.
A. y = -4cos 6?t
B. y = 4cos 
t
C. y = 4cos 6?t
D. y = -4cos 3?t
Solve the problem.Bill swims at a speed of 6.7 mph in still water. The river he's in flows at a speed of 2.1 mph. How long will it take Bill to swim 2.7 mi upstream? Round your answer to the nearest tenth of an hour, if necessary.
A. 0.6 hr B. 12.4 hr C. 1.7 hr D. 0.3 hr