Photography reprints cost $0.52 each at a local photo shop. Through the mail, they cost $0.44 each plus $1.20 postage and handling. How many reprints must a customer purchase to make it less expensive to use mail order?

Answer 1

you have two functions:

cost1 = .52x
cost2 = .44x + 1.2 , where x is the number of prints

the costs are equal when
cost 1 = cost2 , or
.52x = .44x + 1.2

solving this you get x = 15

so try 16 in each equation to see which is the cheaper.

Answer 2

So basically the answer would be x>15? Does this make sense considering that 16 is greater than 15? Thanks for the help!

Answer 3

yes, you got it

Answer 4

Thanks! Take care! :)