Question

If f(x)=-7x+2 and g(x)=square of x+3 what is (f^o g)(-2)

Answer 1

lol "square of x +3 is rather ambiguous

Answer 2

square root lol

Answer 3

oooh

Answer 4

whatever it is, do that first

Answer 5

\[g(x)=\sqrt{x+3}\] what is \(g(-2)\)?

Answer 6

-7(-2)+2=16

Answer 7

CAREFUL HERE

Answer 8

you want \(f\circ g(-2)\) right?

Answer 9

yes

Answer 10

that means you have to do \(g\) FIRST then \(f\) SECOND

Answer 11

Okay

Answer 12

i know it is confusing because we read from left to right, so it might seem like it is backwards

Answer 13

but we put the variable on the right when we write \(f(x)\) so we are always reading it backwards

Answer 14

in other words \[f\circ g(-2)\] means \[f(g(-2))\] you do \(g\) first, \(f\) second

Answer 15

so it would be 1 right

Answer 16

x+3 would be -2+3=1 then square root?

Answer 17

\[g(-2)=1\] right
now do \(f(1)\)

Answer 18

-7(1)+2=-5?

Answer 19

bingo

Answer 20

15 or 20 more and you will have mastered this for sure

Answer 21

I bet lol thanks so much I'll try some on my own and if i need help I'll ask thanks again