Question

a function is defined as f(x)= -8x^2. what is f(-3)?

Answer 1

replace each x with -3 and evaluate

Answer 2

f(x)= -8x^2

f(-3)= -8(-3)^2

f(-3) = ???

Answer 3

i got 576

Answer 4

you first square -3 to get 9

THEN you multiply


you don't multiply -8 and -3 to get 24 and square it to get 576

Answer 5

PEMDAS says that you evaluate exponents first, then multiplication comes next

Answer 6

-72

Answer 7

better