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4 years ago

6

4. COLLEGE FUND When Melissa was born, her parents put $8,000 into a college fund account that earned 9% simple interest. Find t

he total amount in the account after 18 years.

1 answer:

Delvig [45]4 years ago

6 0

It should be $12 960.

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Step-by-step explanation:

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$6k^3\times( 2k^2+4k+5)\\\\= 6k^3(2k^2)+6k^3(4k)+6k^3(5)\ \ [\text{Using Distributive property}]\\\\=12k^{3+2}+24k^{3+1}+30k^3\ \ [\text{Using exponents rule}:\ a^n\times a^m=a^{n+m}]\\\\=12k^5+24k^4+30k^3$

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4 years ago

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32 - 18 = 7t

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