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# Compound interest and straight lines

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1. If a person has \$100 to invest at 5% per annum compounded monthly; how long will it be before she has \$150? If the compounding is continuous, how long will it be?
A) Compounding monthly, it will be about ___ years before the person has \$150. Round answer to 2 decimal places as needed.
B) Compounding continuously, it will be about ___ years before the person has \$150. Round answer to 2 decimal places as needed.

2. Find the equation of the line with the given properties. Express the equation in general form or slope-intercept for perpendicular to the line -7x +y - 48 and contains point (-7, -2). The equations of the line is _______.

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#### Solution Preview

1. If a person has \$100 to invest at 5% per annum compounded monthly; how long will it be before she has \$150? If the compounding is continuous, how long will it be?

P = \$100
A = \$150
r = 5% = 0.05

Time t in ...

#### Solution Summary

This solution provides step by step answers to two basic algebra problems: one problem of compound interest and a problem of straight line are solved.

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