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3 years ago

Penny received an unexpected $5,000.00 gift from a distant relative. She invests it

Mathematics

1 answer:

leva [86]3 years ago

3 0

Answer:

$9,000.00 is her original investment worth in 10 yrs.

5000 x 1.08 ^10 = 10794.6249864

Then subtract -500000 = 5794.62498636

Step-by-step explanation:

Why, because the first year is proved 5000 x 0.08 = 400

= 400 year 1 but cna keep only if stays in investment for 10 years

400 x 10 = 4000 interest on investment

5000+ 4000 = $9,000.00 SI

+ 1,794.62 Interest on interest if applies (this is called CI) and makes $10794.62

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The formula to solve a quadratic equation of the form

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$x=\frac{7(+/-)11} {2}$

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therefore

The valid value of x is x=-2

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