2 years ago

Pls help. No files pls. Will give brainliest.

Mathematics

1 answer:

nordsb [41]2 years ago

6 0

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

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