Find the area between the graph of the function and the x-axis over the given interval, if possible.f(x) = 4e-x for (-?, e]
A. 0.264
B. -60.616
C. -0.264
D. Divergent
Answer: D
Mathematics
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Solve the problem. Round your answer, if appropriate.The volume of a sphere is increasing at a rate of 5 cm3/sec. Find the rate of change of its surface area when its volume is 
cm3. (Do not round your answer.)
A. 
cm2/sec
B. 
cm2/sec
C. 
cm2/sec
D. 10? cm2/sec
Mathematics
Answer the question.If y = sin ?, what is csc ? in terms of y?
A. csc ? = 
B. csc ? = 
C. csc ? = 1 - y
D. csc ? = 
Mathematics
Solve the problem.log 7 1 = x
A. 1 B. 7 C. 49 D. 0
Mathematics
Write the complex conjugate.-15i
A. 15i B. 15 C. -15 D. -15i
Mathematics