Add.31 + (-53)
A. -22
B. -84
C. 84
D. 22
Answer: A
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Solve the problem.The position (in centimeters) 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. How fast is the object moving when it is moving fastest?
A. 
cm/sec
B. A cm/sec
C. A
cm/sec
D. A
cm/sec
A pitching machine throws 70% strikes and 30% balls. Five pitches will be thrown by the machine.What is the probability that the machine will throw five balls?
A. 0.3 + 0.3 + 0.3 + 0.3 + 0.3
B. 0.35
C. 0.34 × 0.7
D. 
E. none of these
Determine whether the given equation is an identity.5x + 8x = 12x
A. Yes B. No
Determine if the series defined by the formula converges or diverges.a1 = 9, an+1 = 
an
A. Converges B. Diverges