Maria has 56.20 feet of ribbon to use for a border around a rectangular bulletin board in her
classroom. The board is 4.47 feet tall and 7.25 feet wide. How many feet of ribbon will Maria
have left after she puts the border around the bulletin board?

32.76 ft

Step-by-step explanation:

step 1

Find the perimeter of the rectangular bulletin board

The perimeter of rectangle is given by

where

W is the width

H is the height

we have

substitute

step 2

Subtract the perimeter from the total feet of ribbon

so

↓↓↓↓↓↓↓↓↓

step-by-step explanation:

this is a parabola.