Find the area.
A. 54 mi2
B. 216 mi2
C. 72 mi2
D. 108 mi2
Answer: D
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Solve the problem.Julie and Eric row their boat (at a constant speed) 24 miles downstream for 4 hours, helped by the current. Rowing at the same rate, the trip back against the current takes 6 hours. Find the rate of the current.
A. 0.5 mph B. 1 mph C. 5 mph D. 2 mph
Solve.A pulsed electric voltage that contains a dc component of 2V is defined by 
where t is time (in ?s). Find a0 (if it is not zero), two nonzero cosine terms (if they exist), and two nonzero sine terms (if they exist) of the Fourier series for the time-dependent voltage.
A. 
- 
B. 2 - 
C. 2 - 
D. 
- 
Of all books sold, about 7% are about diet and exercise. If Marvin's Bookstore sold 400 books last month, how many were about diet and exercise?
A. 28 B. 57 C. 3 D. 280
Provide an appropriate response.Change 
to an improper fraction.
A. 
B. 
C. 
D. 