1. Solving equation = finding value(s) for the unknown that make the equation true Add, subtract, multiply, divide, raise to powers, take roots, find least common denominators to isolate the unknown Solving Linear Equations

2. Example 1: solve for x Example 2: solve for t

3. Example 3 Invest $140,000 with the goal of collecting $10,000 in interest each year. How much should go in risky account earning 10% interest and how much should go into safer account earning 5% interest?

4. Example 3 – continued

5. Example 4 If profit is linked to number of items sold by the following equation, where will the company reach $60,000?

6. Example 5 When a $980,000 building depreciates in value for tax purposes, its value, y, after x months of use is given by: How many months will it take for the building to fully depreciate? How many years?