We don't see the choices but the answer will be something like

Answer:
see below
Step-by-step explanation:
Multiply by 2 and expand the right side:
2A = b1h +b2h
Subtract the b2 term:
2A -b2h = b1h
Divide by h:
b1 = (2A -b2h)/h
Answer:
$30.00
Step-by-step explanation:
The original price of the sweater is $75.00. The new sale price is the original price of 100% less 60% of the original price. That means the sales price is 40% of the original price.
You can do this 2 ways:
1. $75 x 60% or .60 = $45
$75-45 = $30
or
2. $75 x 40% or .40 = $30
It will take 15 minutes to fill the ship to 75% of its capacity