I believe the answer is -9 you start from the inner most parenthesis
Answer:

Step-by-step explanation:
Since the line passes through the origin, it must be a proportional/direct variation equation.
Direct variation equations have the form:

Where a is the constant of proportionality.
Let’s solve for a. We know that when x=5, y=40. So:

Divide both sides by 5:

Therefore, our equation is:

We want to find the value of k such that y=-24. So, subsitute -24 for y and k for x:

Divide both sides by 8:

Hence, the value of k is -3.
i will it means full combo so look at it closely it might be a or b that would be my guess i hoped i helped