Evaluate the expression.
3
A. 
B. 3
C. 
D. 
Answer: C
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Solve the problem.The position(in feet) of an object oscillating up and down at the end of a spring is given by 
at time t (in seconds). The value of A is the amplitude of the motion, k is a measure of the stiffness of the spring, and m is the mass of the object. Find the object's velocity at time t.
A. v = - A
cos 
ft/sec
B. v = A
cos 
ft/sec
C. v = A
cos 
ft/sec
D. v = A cos 
ft/sec
First, use front end rounding to estimate each answer. Then find the exact answer.The fully loaded car cost $2345 more than the basic model. If the basic model cost $18,439, what did the fully loaded car cost?
A. estimate: $18,000 + $2000 = $20,000; exact: $20,784 B. estimate: $18,400 + $2300 = $20,700; exact: $20,784 C. estimate: $20,000 + $2000 = $22,000; exact: $20,784 D. estimate: $18,000 + $2300 = $20,300; exact: $20,784
Solve the problem.When an object is dropped to the ground from a height of h meters, the time it takes for the object to reach the ground is given by the equation t = 
, where t is measured in seconds. If an object falls 122.5 meters before it hits the ground, find the time it took for the object to fall.
A. 5 sec B. 25 sec C. 6 sec D. 8 sec
Find the indicated fractional part.
of -81
A. 16
B. - 
C. - 
D. -18