Answer:
Step-by-step explanation:
You'll divide the tip by the sub-total and multiply by 100
7/52.99 *(100) =13.21%
Answer:

Step-by-step explanation:
The formula for the future value (FV) of an investment earning compound interest is

where
PV = the present value (PV) of the money invested
r = the annual interest rate expressed as a decimal fraction
t = the time in years
n = the number of compounding periods per year
Data:
FV = $7100
r = 8 % = 0.08
t = 7 yr
n = 2
Calculation:

The answers are...
B. (3 ^3) ^9 * (7 ^3) ^6
D. (3 ^3 + 3 ^9) * (7 ^6 + 7 ^3)