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.
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900 - 250 = 650
650 / 250 = 13 / 3 = 2.6 = 260%
Answer:
4/9 * 7 =3.11111111
Step-by-step explanation:
4/9 * 7 =3.11111111
Answer:
About 3.67
Step-by-step explanation:
1 - 1/3 = 3.66666666667
And 3.66666666667 ≈ 3.67