Question

If f(x) = 2x2 − 30, find f(4) would you put the 4 in the f(x) place?

Answer 1

\[f(x)=2x^2-30\]
replace x by 4

Answer 2

plug in 4 on the right side

Answer 3

Did you understand? @rachaellla

Answer 4

okay. and yes

Answer 5

Nice!

Answer 6

wait actually so youre looking for x?

Answer 7

No, you are looking for \(f(4)\)

Answer 8

so its If f(x) = 24^2 − 30 ?

Answer 9

No..\[f(4) = 2(4)^2 - 30 \]

Answer 10

:/ so then what am i looking for?

Answer 11

You're looking to simplify that expression.

Answer 12

oh okay

Answer 13

so it would be 2?

Answer 14

yes

Answer 15

thank you :)