I suppose you want to solve the following equation for b:

First of all, you need to divide both sides by 9:

Then, subtract 2 from both sides:

Answer:
Let me look some things up.
Step-by-step explanation:
Then I will get back to you
Answer:
weekly earnings = 300+50x
Step-by-step explanation:
x is vacuums sold
It is 24 because 5t=5xt and t is 2 then 2m= 2xm m=7 so 24