Question

60. If a publisher charges $15 for the first copy of a book

that is ordered and $12 for each additional copy, which
of the following expressions represents the cost of
y books?

F. 12y + 3
G. 12y + 15
H. 15y - 3
J. 15y + 3
K. 15y + 12

Answer 1

The answer is G. Think of the variable y as each additional copy. 12 times (y- # of additional copies). 15 is the starting pay of the first copy so you only need to pay 15 once. However, 12 depends on how many additional copies you have which is our missing number y