Question

Beth swam laps to raise money for a charity. Beth raised $15 plus $0.65 per lap that she swam. She raised a total of $80. Let x represent the number of laps Beth swam. What expression completes the equation to determine the total number of laps Beth swam? How many laps did Beth swim? Enter your answers in the boxes.

______= 80

______ Laps

Answer 1

The amount Beth raised by swimming is ...

... x · $0.65

In addition, she had a contribution that was not related to the number of laps. Her total can be expressed as

... 15 + 0.65x = 80

_____

Subtract 15 and divide by 0.65 to find

... x = (80 -15)/0.65 = 65/0.65 = 100

Beth swam ...

... 100 Laps