Question

The sales tax in one state is 7%. Write a function rule for finding the total cost of an item with selling price x. Then find the total cost of a CD player with a selling price of $150.

Answer 1

selling price= x(1+ 7/100)
$106.5

Answer 2

sorry, not selling price, it will be total cost ^^

Answer 3

f(x) = x + .07x where x is the cost of the item before tax

f(150) = 150 + .07(150) = $160.50

Answer 4

yeah, it will be $160.50. my typing error..^^