The answer would be D
multiply -2 and (-4m-8) to get 8m+16
then subtract -2m to get 6m+16
Answer:

Step-by-step explanation:
Given:

add all together with exponents
=48*290
= Then turn into a smaller exponent
= 
combine like terms

=
Answer:
y=4
Step-by-step explanation:
Since the slope is constant, and the only y value for each x value is 4, then the equation is y=4.
The answer would be 240 hope I helped
Let d(x) = 2x - 4
Or
y = 2x - 4
We have replace x = y
x = 2y - 4
Now Isolate "y"
x + 4 = 2y
Pass "2" dividing
(x + 4) / 2 = y
y = x/2 + 2
Or
d(x)^-1 = x/2 + 2