Answer:
A
Step-by-step explanation:
Joint variation is given by:

Where k is some constant.
We are given that y = 360 when x = 4 and z = 10. Therefore:

Solving for k:

Therefore, our equation is:

Then when x = 5 and z = 12:

The answer is A.
-30, 10*4=40 so you do 9-40+1 which is equal to -30
Answer:
I think its AM not sure tho
Step-by-step explanation:
Answer: d
Step-by-step explanation: