Your restaurant bill subtotal was $85. with a sales tax rate of 7.5%, and tip rate of 18%. how much was the tax and tip? explain

Bills is 85

tax is 7.5% or 0.075 as a decimal.  

so tax is 85 x 0.075 = 6.38

tip is 18% of 0.18 as a decimal

so tip is 85 x 0.18 = 15.3

to tip and tax is

6.38 + 15.3  = 21.68

1,645,493,059.35

step-by-step explanation:

your answer would be 12