Solve the problem.A firm estimates that it will sell N units of a product after spending x dollars on advertising, where 
and x is in thousands of dollars. By sketching the function determine how much the company should spend in order to maximize sales, and find the maximum sales.
A. The company should spend $250,000. Maximum sales are 187,488 units
B. The company should spend $500,000. Maximum sales are 187,488 units
C. The company should spend $500,000. Maximum sales are 62,488 units
D. The company should spend $250,000. Maximum sales are 62,488 units
Answer: D
Mathematics
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Solve the equation.90 = -9x + 9
A. -9 B. 90 C. 19 D. 94
Mathematics
Determine algebraically whether the function is even, odd, or neither.f(x) = 
A. even B. odd C. neither
Mathematics
Decide whether the relation is a function.{(2, -9), (2, -2), (4, -9), (8, 2), (12, -5)}
A. Not a function B. Function
Mathematics
Refer to the figure. 
Mathematics