#Functions

21 messages · Page 1 of 1 (latest)

flint whale
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F(x) = 2x+4
G(x) = x-1/2x-1

Solve gf(a) = 5

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Help ASAP

old stag
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Sub in a into the f function

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Then sub in that answer into the g function

flint whale
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Yea so 2a + 4

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What do u get

old stag
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Yeh

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Then put 2a+4 into the g function

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And then put that answer to 5 and solve

flint whale
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So what did u get

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???

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I knew that part i need help with verifying the final answer

old stag
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I’ve not worked it out, show me a pic of your steps

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So I can see if your right

pseudo sun
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not sure if it’s right tho

old stag
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(2a+4)- 1/ 2(2a+4)-1 =5
(2a+3) / (4a+7)= 5
2a+3 = 5(4a+7)
2a+3= 20a+ 35
-32= 18a
-1.777=a

flint whale
old stag
flint whale
pseudo sun