Jarrett's puppy weighted 3 3 3/4 ounce at birth. at 1 week old he weighted 5 1/8 ounces. if his weight gain countiues in the pattern how much will the puppy weight at 3 weeks old

First in order to find the pattern, you need to find the number of pounds that the puppy gained from birth to a week after birth.

5 1/8 - 3 3/4=5 1/8 - 3 6/8=4 9/8 - 3 6/8=1 3/8 pounds gained

(1 3/8) (3) = (11/8) (3/1) = 33/8=4 1/8 pounds gained

4 1/8 + 3 3/4=4 1/8 + 3 6/8=7 7/8 pounds at week 3