1. A jewelry maker incurs costs for a necklace according to
C(x) = 35x + 1650
If the revenue function for the necklaces is
R(x) = 85x
how many necklaces must be sold to break even?
2. A manufacturer of shower-surrounds has a revenue function of
R(x) = 81.50x
and a cost function of
C(x) = 63x + 1850
Find the number of units that must be sold to break even?