Give an appropriate answer.Let
f(x) = 16. Find
log2 f(x).
A. 4
B. -6
C. 2
D. 16
Answer: A
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Solve the problem.A spherical water tank with an inner radius of 7 m has its lowest point 1 m above the ground. It is filled by a pipe that feeds the tank at its lowest point (see figure). Neglecting the volume of the inflow pipe, how much work is required to fill the tank if it is initially empty? Express the answer in terms of ?. 
A. 
? J
B. 
? J
C. 
? J
D. 
? J
Divide the real numbers. Write any improper fraction as a whole or mixed number where appropriate.-2 ÷ 
A. - 10
B. 
C. - 
D. 10
Fill in the blank with one of the words or phrases listed below. 
A combination of operations on variables and numbers is called a(n) 
.
A. exponent B. addend C. equation D. expression
You are given the probability that an event will not happen. Find the probability that the event will happen.
?
?
A. 0.73 B. 0.63 C. 0.83 D. 0.68 E. 0.78