To find f(-20), first figure out which piece x = -20 fits with.
Since -20 < -12, x = -20 first in the domain used by the third piece.
For f(-20), treat this function as if it was just f(x) = 3x-7.
f(-20) = 3(-20) -7
= -60 - 7
= -67
Answer: 42
Step-by-step explanation: Subtract 81 from 123 ;) your welcome
Answer:
im good at math and the answer is 2
Step-by-step explanation: