Albert starts a business reproducing high-quality copies of pictures. It costs $155 to prepare the picture and then $15 to make each print. Albert plans to sell each print for $27.

American photographer Gordon Parks (b 1912) holds a large, framed print of one of his photographs.
a. Write a cost equation and graph it.
b. Write an income equation and graph it on the same set of axes.
c. How many pictures does Albert need to sell before he makes a profit?