Solve the Problem $C = 80 x , R = 0.2 x ^ { 2 } - 90 x$

Multiple Choice

Solve the problem.
-For the given cost and revenue equations, find the break-even point(s) C $C = 80 x , R = 0.2 x ^ { 2 } - 90 x$

A) 850
B) 0
C) 0 and 850
D) 0 andR = 80x. 170