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# #11 ​Help.

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#11 Help.

Feb 6, 2018

### Best Answer

#2
+2

(f o g)(4)   =   f( g(4) )

g(x)   =   -2x - 6

g(4)   =   -2(4) - 6

g(4)   =   -8 - 6

g(4)   =   -14

(f o g)(4)   =   f( g(4) )   =   f( -14 )

f(x)   =   3x - 7

f( -14 )   =   3(-14) - 7

f( -14 )   =   -42 - 7

f( -14 )   =   -49

(f o g)(4)   =   f( g(4) )   =   f( -14 )   =   -49

Feb 6, 2018

### 2+0 Answers

#1
0

Is "find (f * g)(4)" meant to be written in that way, or is it suppose to be (f * g)(x)?

Feb 6, 2018
#2
+2
Best Answer

(f o g)(4)   =   f( g(4) )

g(x)   =   -2x - 6

g(4)   =   -2(4) - 6

g(4)   =   -8 - 6

g(4)   =   -14

(f o g)(4)   =   f( g(4) )   =   f( -14 )

f(x)   =   3x - 7

f( -14 )   =   3(-14) - 7

f( -14 )   =   -42 - 7

f( -14 )   =   -49

(f o g)(4)   =   f( g(4) )   =   f( -14 )   =   -49

hectictar Feb 6, 2018