Answer:

Step-by-step explanation:
we know that
To find out how long is Ms.Smith’s bulletin board, multiply Mrs . Porcelli’s bulletin board by 3
so

but first convert mixed number to an improper fraction
so

substitute

convert to mixed number

1/(x+4)2, hope this helped!
Answer:
1.45
Step-by-step explanation:
not sure but trying to help :)