Answer:
7. 1/10 or 10%
9.5/10
11.5/10
13.9/10
Step-by-step explanation:
Mr. and Mrs. Bailey need to invest $2906.50 so as to send their son to college.
<h3>
Compound interest</h3>
Compound interest is given by:

where A is the amount after t years, P is initial amount, r is the rate and n is the times compounded per period
Given that n = 1, r = 9% = 0.09, A = $7500 t = 11. Hence:

Mr. and Mrs. Bailey need to invest $2906.50 so as to send their son to college.
Find out more on Compound interest at: brainly.com/question/24924853
I think it is the first one could be wrong tho
21 of your taking about area
Well the answer to 1274 plus 3599 = 4873. but I don't know what you are asking for?