Estimate the sum.

6 13/28 + 8 3/32

14 1/2
14
15 1/2
15

An advertising firm has an old computer that can prepare a whole mailing in 6 hours. with the of newer model the job is complete in 2 hours. how long would it take the newer model to do the job alone?

How many triangles can be drawn with side lengths 4 centimeters, 4.5 centimeters, and 9 centimeters? explain

Afootball is throw by a quarterback to a receiver