# Compound interest and straight lines

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.