Answer:
megl;r g;rmbr
Step-by-step explanation:
Answer:

Step-by-step explanation:





No, they forgot to switch variable labels after solving for the independent variable...
y=-8x+4
y-4=-8x
(y-4)/-8=x
Now that you have solved for the independent variable x, you switch the variable labels...
y=(x-4)/-8
f^-1(x)=(x-4)/-8 which should really be rewritten as:
f^-1(x)=(4-x)/8 :P
I believe it's 12 because 5*16=80. So, then you would subtract 4 from 16 and gat 12.