Question

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Answer 1

Yeah it's definitely 74

Answer 2

3(-4x+7)+5
where x=-4

Answer 3

@GIL.ojei

Answer 4

@Jumon233 thank you :)

Answer 5

it is the composition of two functions

Answer 6

right

Answer 7

is the question f(x) = 3x + 5 and g(x) = -4x + 7 fog?

Answer 8

is that the question

Answer 9

yes

Answer 10

now open the bracket?

Answer 11

can you?

Answer 12

so was my inital answer wrong then?

Answer 13

um where are those numbers coming from?

Answer 14

subtitute g(X) into F(x)

Answer 15

okay so i'm going to assume my initial answer was wrong.

Answer 16

ok

Answer 17

am i? You're not really say if I am or not.

Answer 18

f(x) = 3x + 5 and g(x) = -4x + 7

Answer 19

now put g(x) in f(x)..i.e 3(-4x+7) +5

Answer 20

yeah that's what I did above.

Answer 21

now , you have put g(x) in to f(x) by substituting -4x+7 into where you have x in F(x)

Answer 22

right

Answer 23

that will give -12x+21+5

Answer 24

now you where given x= -4

Answer 25

s0 , -12(-4) + 21+ 5

Answer 26

okay I see that you're just showing me a different way to do it. You were unclear about that.

Answer 27

but thank you

Answer 28

48+21+5=74 .. you are done