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4 votes
Plzzzzzz helpppp me

Plzzzzzz helpppp me-example-1

2 Answers

3 votes
15.

start by replacing x with 3

so your equation now would look like

f(3)= (3)^2+5(3)-9

next start by doing exponents

f(3)= 9+5(3)-9

now you can do multiplication

f(3)= 9 + 15 - 9

add everything together

9 + 15 -9

your answer is 15. hope this helps
User Drewjoh
by
8.0k points
5 votes

Answer:

15

Explanation:

Just substitute x in the equation

so x=3

so

3^2=9, 5x3=15, -9

equals 15

User Gderaco
by
8.8k points

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