Its 15% because you have to divide 270 by 1800
5 times 2 plus .015 times 2
Mr. and Mrs. Bailey need to invest $2906.50 so as to send their son to college.
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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
Answer:
x ≤ 
Step-by-step explanation:
So first you would start by getting rid of the -4. To get rid of -4, you would need to + 4 on each side leaving you with -2x ≤ 15. Now you need to get rid of -2 from x so that would convert equation to x ≤
. Hoped it helped!
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Answers to 1, 2, and 3 are in the picture