Question

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Answer 1

Answer:

The investment after 28 years is worth $131,200

Step-by-step explanation:

Hello, great question. These types are questions are the beginning steps for learning more advanced Algebraic Equations.

Since the investment doubles in value every 7 years and were are asked the value after 28 years, then we first need to calculate how many times 7 years pass in 28 years. We do this by dividing 28 by 7 like so.....

$\frac{28}{7} = 4$

As we can see the investment will double 4 times. Since it is "Doubling" we can solve this by either multiplying $8,200 by 2 , and then multiplying the answer of that by 2, and so on 4 times. Fortunately, a much easier way would be to raise 2 to the power of 4 and multiply that by $8,200 like so......

$8,200 * 2^{4} = x$

$8,200 * 16 = x$

$131,200 = x$

Finally we can see that the investment after 28 years is worth $131,200

I hope this answered your question. If you have any more questions feel free to ask away at Brainly.