**Example**: Solve the system using the graphing method:

**Example**: Solve the system using the substitution method:

**Example**: Solve the system using the addition method:

**Solve**.

**Interest Problem**: Marsha has $4,500 saved up in two different accounts. She has a savings account earning 2% in annual interest and a CD earning 5% annual interest. How much does she have in each account if her total interest for the year was $198?

**Answer**: Marsha has $900 in savings and $3,600 in the CD.

**Geometry Problem**: The length of a rectangular garden is 3 feet less than twice the width. If the perimeter measures 54 feet then what are the dimensions of the garden?

Solve using the substitution method.

**Distance Problem**: Al can row his boat 30 miles downstream to the general store in 3 hours. The return trip, against the current will take him 5 hours. How fast is the river current?

**Answer**: The river current is flowing at 2 miles per hour.

**Geometry Problem**: Two angles are supplementary and one angle is 45 degrees less than 4 times the other. Find the two angles.

**Graph all solutions to the system of inequalities**: