1. 1.8 Relative change Actual change = actual value – original value

2. 1.8 Relative change Example:

3. 1.8 Relative change Example:

4. 1.8 Relative change 1.How much money did you earn from your purchase? 2.How much did you cousin earn? 3.Who earn more money? 4.Determine the relative change in your $200 investment. Write your answer as fraction and as percent. 5.Determine the relative change in your cousin’s $400 investment. Write your answer as fraction and as percent. 6.In relative terms, whose stock perform better? Explain

5. 1.8 Percent change Determine the actual change and the percent change of the following quantities 1.You paid $20 for a rare baseball card that now is worth $30. 2.Last year’s graduation class had 180 students; this year class size is 225. 3.Ann invested $300 in a energy stock that now is worth $ 540. 4.Bob invested $300 in technology stock that is now worth only $225. 5.Pat invested $300 in a risky dot-com venture, and his stock is now worth $60.