Answer:
-16
Step-by-step explanation:

Answer:
A
Step-by-step explanation:
Interesting problem.
First - let's figure cost of each uniform at purchase.
3,000/40 = $75 each
When some uniforms were returned at $40 - there was a difference of $35 in what they paid and what they rec'd in return. ($75 - 35 = $40)
m=-4
you are subtracting all the numbers by 4 therefore they are all changing by -4
Answer:
the measure of the exterior angle is 87 degrees.