GCSE Higher Revision - 29 Days to Go - Corbettmaths

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Welcome to the 29 Days to Go revision session!
Today we are focussing on Composite Functions.

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i was doing a function question on a mock exam and i got a question that said


f(x)= 2x + c

g(x)= cx + 5

fg(x)=6x + d
c and d are constants

work out the value of d

not really sure on how to go about it, any help? thanks

JohnGood-wd