It is None of them So be smart thank you
(4/5)-(3/8)=17/40 or 0.425 mile
Step-by-step explanation:
a) 6400
b) 4800
c) 32000
hope this answer helps you dear!
The keyword is "sum" which tells you x, y, and z are being added. One half of the sum means that the sum of the three numbers is going to be divided by 2.
x + y + z
------------
2
The answer is -4x+64+2x^2