Posted by Carmin on Monday, June 29, 2009 at 10:01pm.
212 - 198 = 14
14 / 8 = 1.75 -- so he lost an average of 1.75 pounds per week. That's about 0.8% of his original weight.
Yea but they are looking for the rate of change. Wouldn't that be a negative number?
Yes, the rate of change is -1.75 pounds per week. The negative sign is implied in the expression lost an average of 1.75 pounds per week.
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