An electronics store chain sells headphones. The company is about to introduce a new headphone model that is expected to sell very well across its various stores. These are the projected revenue and cost functions for the headphones: R(x) = -210x2 + 6,970x
C(x) = -170x + 39,690

Which two statements are true?

The maximum profit is $57,834.
The maximum profit is $21,000.
A selling price of $27 results in the maximum profit.
A selling price of $17 results in the maximum profit.
A selling price of $16.60 results in the maximum profit.

Desmond wants to sell his car that he paid $8,000 for 2 years ago. the car depreciated, or decreased in value, at a constant rate each month over a 2-year period. if x represents the monthly depreciation amount, which expression shows how much desmond can sell his car for today? 8,000 + 24x 8,000 - 24x 8,000 + 2x 8,000 - 2xdesmond wants to sell his car that he paid $8,000 for 2 years ago. the car depreciated, or decreased in value, at a constant rate each month over a 2-year period. if x represents the monthly depreciation amount, which expression shows how much desmond can sell his car for today? 8,000 + 24x 8,000 - 24x 8,000 + 2x 8,000 - 2x