Answer:
25.2 minutes
Step-by-step explanation:
step 1
Find the area of the given wall

step 2
we know that
You can paint 75 square feet of a surface every 45 minutes
so
using proportion
Find out how long it takes you to paint a surface area of 42 square feet

No no no no no no no no no no
What the question and read the problem again please
5-3z-18=z-1+8z
Add like terms
-13-3z=9z-1
Move terms
-12z=12
Divide both sides by 12
z=1
Answer:
Option A
Step-by-step explanation:
That is your answer