Find the annual interest rate.

I=$297, P=$550, t=6 years

Solving for rate r as a decimal

r = n[(A/P)1/nt - 1]

r = 12 × [(847.00/550.00)1/(12)(6) - 1]

r = 0.07218

Then convert r to R as a percentage

R = r * 100

R = 0.07218 * 100

R = 7.218%/year

Summary:

The interest rate required to get a total amount of $847.00 from compound interest on a principal of $550.00 compounded 12 times per year over 6 years is 7.218% per year.

typically if you want , you would actually put questions here for us to you. but hey, that's just me. maybe someone will magically answer the questions for you without knowing what they are.

answer: 42

use a calculator to find that 845/73 = 11.575

the whole part of the answer is 11. multiply this by 73 to get 11*73 = 803.

subtract that result from 845 to get 845 - 803 = 42