A spectator watches a rowing race from the edge of a river bank. The lead boat is moving in a straight line that is 330 ft from the river bank. If the boat is moving at a constant speed of 50 ft/sec, how fast is the boat moving away from the spectator when it is 560 ft past her?
?
A. 18.63 ft/sec
B. 43.08 ft/sec
C. 61.95 ft/sec
D. 73.01 ft/sec
Answer: B
Mathematics
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Use the substitution formula to evaluate the integral.
A. 
B. - 
C. - 
D. - 
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If f satisfies the equation of change 
, then what can be said about the function 
?
?
A. f is linear with slope 
.
B. f is linear with slope 4.
C. f is exponential with growth factor 
.
D. f is exponential with growth factor 4.
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Find the square root.
A. 15 B. 112.5 C. 50,625 D. -15
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If possible, find 3A + 2B.
A. 
B. not possible
C.
D.
E.
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