Jake made a total of 7 copies at a copy shop with some being black-and-white copies and some being color copies. Black-and-white copies cost 8 cents, and color copies cost 15 cents. If Jake spent a total of 70 cents on copies, which
system of equations can be used to determine the number of black-and-white copies and the number of color copies
he made? Assume b is the number of black-and-white copies and c is the number of color copies.
Ob-C-7
86-150= 70
Ob-C-7
150+80-70
ob-C-70
80+ 150 = 7
Ob-c-70
150+80-7