This work is faster rate than grading 36 assignments in 30 minutes because :
25 ÷ 20 = 1.25
1.25 hw assignment per minute
36 ÷ 30 = 1.2
1.2 hw assignments per minute
You add them and then it would be 30.6898033492
Replace x with -x
if you get same function, function is even
if get negative of original, function is odd
if niehter, then neither
if replace with -x
we get the negattive of it or -14 times cube root of x
answer is it is odd function
Manipulate the first equation to
y = 22-7z
Then substitute in the second to find z
8(22-7z) + 7z = 127
176-56z+7z = 127
-49z = -49
z = 1
So y = 22-7(1) = 22-7 = 15
y = 15; z = 1
