Answer:
6r+7=13+7r
6r+7=7r+13
6r+7−7r=7r+13−7r
−r+7=13
−r+7−7=13−7
−r=6
= 
r=−6
Step-by-step explanation:
:) This is the answer
-2b + 7 > 27.5
- 2b > 27.5 - 7
- 2b > 20.5
b < - 10.25
Soft winds will blow from area b to area a
the balloon starts at 158 thats our set number
then it goes up 56 feet a minute, you add that to your height
after that you have the variables h and t you would write it as
h= 56t+ 158