A student purchases school supplies at a store where the sale tax is 7%. The pre-tax price of the supplies is $48. What is the total cost of the supplies?
[tex]1.07 \times 48 = 51.36[/tex] to add 7% to the pre-price, simply multiply the pre-price by 1.07, do this to automatically get the total. I personally see % as decimals so that helps me figure out where to start.
