Math Percentages

Question

You bought some items on Amazon.

Each item cost $13.49 and you paid a shipping fee of $15. You also paid 6.38% tax before adding the shipping fee.

Write an equation that can be used to determine the total cost (p) of the items (x) that you bought including the shipping fee. 

Answer 1

Cost =

p = 1.0638x + 15

p(1) = 13.49(1.0638) + 15

= about 14.39 + 15

= $29.39