Answer:
64
Step-by-step explanation:
First of all substitute the values to where ever you see their corresponding variables to make them multiply.
x = 9
y = 3
z = 2
so we get
8x as 8(9),
7z as 7(2)
2y as 2(3)
then the it's will be
8(9) - 7(2) + 2(3)
which is
72 - 14 + 6
finally we get
4x/x^-5x^3
^ represents the exponent
Answer:80
15% of 80 is 12
80/10=8=10%
8/2=4=5%
8+4=12=15% of 80