Question

The total bill for drinks and a pizza for three people is $14.40 before tax. The tax is 5%. What will be the amount of sales tax added to the bill

The group wants to leave a 15% tip on the $14.40 bill. What will be the amount of the tip

Answer 1

Have to pay $15.12 but with the 15% tip, it's $16.56.

Explanation:

To find how the amount to pay, you do y=a(b)^x.

In this case, it would be y=14.40(1.05)^1. You get the 1.05 from adding the 5% to 100 then turning it into a decimal (dividing by 100).

To figure out the amount needed to be paid with a 15% tip is the same idea. Give it a try.