Solve the problem.The price p and the quantity x sold of a certain product obey the demand equation p = - 
x + 140, 0 ? x ? 1120.What price should the company charge to maximize revenue?
A. $84
B. $70
C. $105
D. $35
Answer: B
Mathematics
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Multiply.7(-9)
A. -63 B. -70 C. 70 D. 63
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Compare the decimal numbers, and insert <, >, or = to form a true statement.458,000 
0.0458
A. > B. = C. <
Mathematics
Choose the most reasonable graph for the following situation. An entrepreneur opens a new restaurant and plans to watch the weekly sales for the first 15 weeks of operation. He hopes weekly sales will approach $10,000.
A.
| Sales at a New Restaurant |
B.
| Sales at a New Restaurant |
C.
| Sales at a New Restaurant |
D.
| Sales at a New Restaurant |
Mathematics
Solve the problem.A reflecting telescope contains a parabolic mirror. If the mirror is 18 inches across at its opening and is 2 feet deep, where will the light be concentrated?
A. 0.1 in. from the vertex B. 0.8 in. from the vertex C. 10.1 in. from the vertex D. 0.2 in. from the vertex
Mathematics