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
That's easy it is 11/8 because 4+7=11 8 will be the same
C a rectangle. brainily says this is too short so I am writing more
Answer:
240
the always the + and the - = +
so positive plus minus equals positive
