Question

Dan built a deck that is 5 feet long and 5feet wide . He built another deck that is 5 feet long and 7 feet wide . He built a thirt deck that is 5 feet long and 9 feet wide . How do the areas changes?

Answer 1

The areas increase by ten feet squared each time. It goes from 5 to 7 to 9, which is a two number increase each time, which means it would be 5x2, and that's ten.

Answer 2

The areas are as follows:

Deck 1:    5 * 5 = 25ft squared

Deck 2:    5 * 7 = 35ft squared

Deck 3:    5 * 9 = 45ft squared.

They increase by 10ft squared each time.