Well Those are variables and it is using the Distributive property to solve. For example P(a+b) simplify P*a + P*b.
This question seems to me to be an exercise in applying the rule for a difference of squares in order to rewrite the difference of two relatively large numbers as the "simpler" product of other integers.
Answer:
c
Step-by-step explanation:
8500 x .09 = 765
8500 + 765 = 9265
I'm pretty sure its 127.8