So we have the equation:

Then we need to multiply by 4 on both sides to get rid of the denominator on the left:

Then we subtract 9 on both sides to solve for z:

Therefore the answer is z = -0.6.
It is opposite of what the equation is saying. Like if you had to add you would subtract or if you multiply you would divide.
They would make a profit of $187.50
(if that is what you were trying to ask)
Maria. You can check by dividing 8 into 3 and 3 into 8.
Answer:
2/17
Step-by-step explanation: