Solve the problem.A teenager starts a company selling personalized mouse pads. The profit function, in dollars, for producing and selling x mouse pads is f(x) = -0.5x2 + 20x - 30, whose graph is shown. 
How many mouse pads will give the maximum profit?
A. 38 mouse pads
B. 30 mouse pads
C. 2 mouse pads
D. 20 mouse pads
Answer: D
Mathematics
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