A swimmer who weighs 130 pounds using a sidestroke burns about 472 calories an hour.  A swimmer who weighs 155...

A swimmer who weighs 130 pounds using a sidestroke burns about 472 calories an hour.  A swimmer who weighs 155 pounds using a sidestroke burns about 563 calories an hour.

1. Use these two data points to draw a graph and a line of best fit for the data.    2. Use the graph to approximate how many calories a 190- pound swimmer burns using a sidestroke in an hour.  3. Write an equation that fits your graph.   4. Use that equation to calculate the number of calories a 190-pound swimmer burns using a sidestroke in an hour.  5. Explain in words how you found the equation in number 3. 
Review Problem   6. Mangos and Oranges: Maisha went to Berkeley Bowl and spent $9.20 on 6 mangos and 5 oranges.  Talida stopped at Berkeley Bowl on the same day and paid $7.60 for 3 mangos 10 oranges.  Show how to use equations to figure out the prices for mangos and oranges that day at Berkeley Bowl.