Question

A dieter loses 2.5 pounds each week for three weeks. What is the change in the dieter's weight after three weeks?

Answer 1

-7.5 pounds

Explanation:

This can be solved through the equation:

w is for week, c is for change in weight

-2.5w = c

-2.5(3) = c

-7.5 = c

It is negative because the dieter is losing weight. If it is looking for the total loss and not the rate of change, then 7.5 pounds would also be an acceptable answer.