Trying to get this math problem right

Question

Donut Delights, Inc. has determined that when x donuts are made daily, the profit P, in dollars, is given by P(x) = –0.001 x 2 + 2.7x – 950

(a) What is the company’s profit if 1,000 donuts are made daily?

(b) How many donuts should be made daily in order to maximize the company’s profit? Show work.

Answer 1

(a) 1000*1000/-1000+ 2.7*1000 - 950 = -1000 + 2700 - 950 = 1700 - 950 = 750

(b) -b/(2a) = -2.7/(-0.002) = 2700/2 = 1350