# Investments and Interval Notation

1. Suppose $8,500 is invested in an account at an annual interest rate of 3.7% compunded continuosly.How long (to the nearest tenth of a year) will it take the investment to double in size?

2. Solve, and write the answer in interval notation x+5/x-7 ? 0

3. Solve: ?3x+10=-x

© BrainMass Inc. brainmass.com October 10, 2019, 5:49 am ad1c9bdddfhttps://brainmass.com/math/algebra/investments-interval-notation-518734

#### Solution Preview

Hi there,

Thanks for letting me work on your post. Here is my explanation:

1. ...

#### Solution Summary

The expert examines investments and interval notations.

$2.19