A shopkeeper buys x number of articles at a cost of C,

Question

Profit: A shopkeeper buys x number of articles at a cost of C, given the following formula C(x) = 12x + 75. He obtains a revenue R(x) = 0.1x² - 3x by selling x articles. Find the number of items to be sold if he has to make a monthly profit of $2425.

Answer 1

P(x)= R(x) - C((x) = 0.1x² - 15x - 75 = 2425; x² - 150x - 2500 = 0; x = 75 + √5625 + 2500 = 165