anonymous
  • anonymous
Given the following functions f(x) and g(x), solve f[g(7)] and select the correct answer below: f(x) = 4x + 21 g(x) = 2x + 2 16 49 85 784
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
@campbell_st
anonymous
  • anonymous
@e.mccormick @Elsa213
anonymous
  • anonymous
@ali2x2 @heretohelpalways

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More answers

anonymous
  • anonymous
@ganeshie8 @thomaster
triciaal
  • triciaal
work "inside out"
triciaal
  • triciaal
find g(7) and use this value for x in f(x)
anonymous
  • anonymous
okay.
triciaal
  • triciaal
note that you will get the same result if you substitute the expression first then do the number last
anonymous
  • anonymous
x=7g-2 -------- 2
anonymous
  • anonymous
@triciaal
triciaal
  • triciaal
no
triciaal
  • triciaal
|dw:1439410483025:dw|
anonymous
  • anonymous
g(7)=16
triciaal
  • triciaal
|dw:1439410539696:dw|
anonymous
  • anonymous
85?
anonymous
  • anonymous
c?
triciaal
  • triciaal
no question mark! yes good job.
anonymous
  • anonymous
Can you also help with this: Given the following functions f(x) and g(x), solve (f + g)(5) and select the correct answer below: f(x) = 8x − 13 g(x) = x − 9 23 27 31 40
triciaal
  • triciaal
|dw:1439410763924:dw|
triciaal
  • triciaal
you can do the substitution first it's ok
anonymous
  • anonymous
okay so 8*5 − 13+5-9 40-13+5-9 27+-4 23?
anonymous
  • anonymous
A?
triciaal
  • triciaal
yes
anonymous
  • anonymous
one more... Given the functions f(x) = 7x + 13 and g(x) = x + 2, which of the following functions represents f[g(x)] correctly? f[g(x)] = 7x + 15 f[g(x)] = 7x + 27 f[g(x)] = 7x^2 + 15 f[g(x)] = 7x^2 + 27
anonymous
  • anonymous
is it A?
triciaal
  • triciaal
no
anonymous
  • anonymous
C? I know you are adding 15, so
triciaal
  • triciaal
g(x) is your x in f(x)
triciaal
  • triciaal
|dw:1439411160771:dw|
triciaal
  • triciaal
to simplify you expand the parenthesis and group like terms
anonymous
  • anonymous
7*x+15
triciaal
  • triciaal
NO
triciaal
  • triciaal
read my directions click on the pencil to the right of the box and continue
anonymous
  • anonymous
|dw:1439411604907:dw|
anonymous
  • anonymous
@triciaal helloo?
triciaal
  • triciaal
|dw:1439411682435:dw|
anonymous
  • anonymous
so b
triciaal
  • triciaal
when you distribute you multiply each term inside the parenthesis by what is outside
triciaal
  • triciaal
yes
anonymous
  • anonymous
thanks!
triciaal
  • triciaal
you are welcome

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