Question

If f(x) = 2x2 + 7, find f(-3) =
What’s the f(-3)

Answer 1

Answer:
43
Step by step:
f(x)=2x^2+7
f(3)=2(3)^2+7
f(3)=6^2+7
f(3)=36+7
f(3)=43

Answer 2

replace the x with -3

Explanation:

if you ever have f(x) = 'insert equation' and then it says find f('insert number'), you replace what ever variable is after the first 'f' with the number after the second 'f'. hope this helped!