Answer:
As a decimal, 11/20 is .55.
5
Step-by-step explanation:
x ^ 2 = 144
x = 12, x = -12
Check:
12 * 12 = 144
-12 * -12 = 144
f^-1(x) = x - 18
y = x + 18
x = y + 18
x - 18 = y
i have answered this question before let me post an image
The answer's in the picture; hope this helps <3