I only need number 7 and 9 please help and show work

9

1=49

2=131

3=131

Step-by-step explanation:

1=4

2,3=180-49

and you should answer 7 like this

I reccomend the search bar up at the top ("What is your question") before you ask questions, to make sure they're not already answered.

Unit rate is a quantity per one unit of time. In this case, how many miles per one hour. Simply divide both numerator and denominator by 3.