f(x)=3x+c g(x)=cx+8 fg(x)=6x+d Work out c and d.
fg(x) means f of g of x
fg(x) = 3(cx+8) + c = 3cx + 24 + c = 6x + d
3cx = 6x 3c=6 c=2
24 + c = d 24+2=d=26
CF
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