Posted by Carmin on Monday, June 29, 2009 at 10:01pm.
At the beginning of George’s diet, he weighed 212 pounds, and 8 weeks later he weighed 198 pounds. Find the average rate of change of George’s weight.
I think its 1.75 but also 1.75? which one could it be? Please help! Thanks!

Algebra  Ms. Sue, Monday, June 29, 2009 at 10:08pm
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.

Algebra  Carmin, Monday, June 29, 2009 at 10:10pm
Yea but they are looking for the rate of change. Wouldn't that be a negative number?

Algebra  MathMate, Tuesday, June 30, 2009 at 6:59am
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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