Omar is born weighing 8 pounds 3 ounces. The doctors says he should gain about 5 ounces each week for the next 4 weeks. How much should omar weight after 4 weeks

5 ounces for 4 weeks is 20 ounces.

There are 16 ounces in a pound so 20 ounces is 1 pound and 4 ounces.

8 lbs 3 oz plus 1 lb 4 oz is 9 lbs 7 oz.

After 4 weeks, he should weigh 9 lbs 7 oz