Solve the problem.The revenue achieved by selling x graphing calculators is figured to be 
dollars. The cost of each calculator is 
How many graphing calculators must be sold to make a profit (revenue - cost) of at least $110.00?
A. between 14 and 26 calculators
B. between 11 and 21 calculators
C. between 10 and 22 calculators
D. between 12 and 20 calculators
Answer: C
Mathematics
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Evaluate the surface integral of the function g over the surface S.G(x, y, z) = 
; S is the surface of the parabolic cylinder 10y2 + 5z = 15 bounded by the planes 
x = 1, y = 0, and z = 0
A. 
B. 
C. 
D. 
Mathematics
Add or subtract as indicated. Simplify if necessary.
+ 
+ 
A. 
B. 
C. 
D. 
Mathematics
Model the curve with a sine function.
?
?
?
Note that the period of the curve is 
and its range is 
and the graph of the sine function is shifted to the left 0.55 units.
?
A. 
B. 
C. 
D. 
E. 
Mathematics
Find the derivative.f(x) = 
- 
+ 
, find f'(x)
A. - 
- 
- 
B. 
- 
- 
C. -2
+ 
- 
D. - 
+ 
- 
Mathematics