Solution: We are given:
Sales tax [tex]=7\%[/tex]
The pre-tax price of the supplies [tex]= 48[/tex]
We have to find the total cost of the supplies.
We first need to find the sales tax on the price of supplies. The sales tax amount is:
[tex]7\% of 48=0.07 \times 48=3.36[/tex]
Therefore, the total cost of the supplies = pre-tax price of the sales + sales tax amount
=$48 + $3.36
=$51.36