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# Composite Functions

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https://vle.mathswatch.co.uk/images/questions/question17183.png

need help on question c)

qualitystreet  May 20, 2018
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Hey QS!

The problem already gives you function A and B, you just need to write an equation.

Function A: $$(x + 4)\cdot2=y$$

Function B: $$x\div5+1=y$$

M goes through A and then B to turn into 2p+1

We write the equation:

$$[(m+4)\cdot2]\div5+1=2p+1\\ (2m+8)=2p\cdot5\\ m+4=5p\\ m=5p-4\\$$

I hope this helped,

Gavin

GYanggg  May 20, 2018