Hello,
You have just to read the arrows un reversed order:
in f we find (-1,-3) so in f^{-1} we find (-1,-3)^{-1}=(-3,-1)
Answer: 382.5 minutes
Step-by-step explanation:
7 1/8 = 7.125
7.125*60=427.5
Thus, the movie is 427.5 minutes long
427.5-45 = 382.5
Hope it helps <3
Y =Mx + C
where M = gradient / slope
C = y intercept
comparing with y = 2x - 3
M = 2
C = -3