Given the Cost Function, C(x), and the Revenue Function, R(x) $a , b$

Multiple Choice

Given the cost function, C(x) , and the revenue function, R(x) , find the number of units x that must be sold to break even.
-Find the values of $a , b$ , and c such that the equation $y = a x ^ { 2 } + b x + c$ has ordered pair solutions $( - 2 , - 6 )$ , $( 2,10 )$ , and $( 4,6 )$ .

A) $a = 1 ; b = 4 ; c = 6$
B) $a = - 1 ; b = 4 ; c = 6$
C) $a = 1 ; b = 6 ; d = 4$
D) $a = - 1 ; b = 6 ; c = 4$