The length of a spring is a linear function of the weight of the object compressing it. for a particular spring, the length decreases by 1.5 inches for every 3 pounds pressing down on it. when 4 pounds are on the spring, the length of the spring is 8 inches long. what is the length of the spring if 15 pounds are pressing down on the spring?

the answer is 200

step-by-step explanation:

the way the question is worded, it seems to imply the $264 interest is simple interest, not compound interest.

the simple interest for 2 years is $264; the simple interest for 1 year is $132.

$132 interest on a $600 investment means an interest rate of (132/600)*100 = 22%.

the value of $200 at 22% interest compounded annually for three years is

200%281.22%29%5e3

the amount of interest is that value, minus the original $200.

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