The weight of lyle’s dog increased from 29.7 pounds to 48.9 pounds in an 8-month period. what was the dog’s average weight increased per month?

First subtract the weight the dog weighs now to the weight he was:

48.9
- 29.7

19.2

Then take the number you got which is the weight the dog gain in total, and divide it by the months the dog gained weight to get the average weight gained each month:

19.2/8 = 2.4

The average weight gain each month was 2.4 pounds.

Hope this helped you!