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Answer:
x(C) = (C -75000)/150
Step-by-step explanation:
To solve for x, undo what is done to x.
c = 75000 +150x
c -75000 = 150x . . . . . . . subtract 75000
(c -75000)/150 = x . . . . . divide by the coefficient of x
The area function is ...
x(C) = (C -75000)/150
