Question

The function C(x) = 300x + 180 gives the cost for a college to offer x sections of an introductory class in CPR (cardiopulmonary resuscitation). The function R(x) = 390x gives the amount of revenue the college brings in when offering x sections of CPR. Find the point where the cost equals the revenue by graphing each function on the same coordinate system. (x, y) =

Answer 1

Cost = Revenue

Then

300x + 180 = 390x

x= (390-300)/180= 180/90 = 2

Now graph both functions