Question

Use the functions to answer the question.
f(x) = 3x - 9; g(x) = x - 4
What is the value of (f o circle g)(5)? (Points : 4)

Answer 1

f(x) = -x^2/3 + 2x + 7
x = 2/2(-1/3) = 2/(-2/3)= (2/1)(3/2)= 3 maximum
(-x^2 + 6x + 21 /3) = ((-x^2 + 6x + 9) + 21 + 9)/3)
= (-(x + 3)^2 + 30)/3
= -(x + 3)^2 + 10
y = 10

Answer 2

did that help?

Answer 3

- 6
5
6
9

Answer 4

(3x-2) squared is 9x^2 - 12x + 4

Answer 5

did that help?

Answer 6

no -_- lol, i am sorry

Answer 7

(f o g) = you input the equation of g into f
for example if f = x^2
and g = (x-3)
you would put g into f
like so
(x-3)^2

Answer 8

(f o circle g)(5)
just means you input 5 into the equation of g, then substitute g into the equation for f.

Answer 9

If g = x- 5
and f = 2x
for g(5)
g = 5-5
f = 2(0)
f = 0
like so, do you understand?

Answer 10

yes...