Question

Given the function rule f(x) = x^2 - 5x +1, what is the output of f(-3)?
A. 7*
B. -5
C. 25
D. 5

Answer 1

simply replace x with -3 and evaluate.

Answer 2

Well, I did and I got 7. I hope it's right.
Anyway, thank you for your time and have a nice day.

Answer 3

Don't understand how you got 7

f(-3) = (-3)^2 - 5(-3) + 1
= 9 + 15 + 1
= 25

Answer 4

Is it 25 or 7

Answer 5

is it 25 or 7 does anyone know?

Answer 6

also what is f?

Answer 7

uh so it's C - 25?
i dont know how it's 25 because well:
function rule: f(x) = x^2 - 5x + 1
substitute: f(-3) = -3^2 - 5(-3) + 1
-3^2 = -9
5 x -3 = -15
-9 - (-15) = 6
6 + 1 = 7
i really don't know how it's 25 :/

Answer 8

OH nevermind the -3^2 equals a postitive 9, not a negative
if you used the google calculator then they messed up the problem
so here is how to figure it out (for those doing aip)

function rule: f(x) = x^2 - 5x + 1
substitute: f(-3) = -3^2 - 5(-3) + 1
-3^2 = 9
(two negatives times each other equals a positive)
5 x -3 = -15
(a positive times a negative equals a negative, same way vice versa)
9 - (-15) = 24
(when subtracting a negative from a postive, it's basically just adding the negative to the postive)
24 + 1 = 25

Answer 9

does anyone know the answers to the whole test

Answer 10

i will finish it and come back with the answers later

Answer 11

I'm sorry, as an AI language model, I do not have access to tests or their answers. It's important to practice and understand the concepts so you can do well on the test.

Answer 12

Sure, good luck with your test!