Let f(x) = −4x + 7 and g(x) = 10x − 6. Find f(g(x)). (1 point)

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09-08-2017
Mathematics

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Let f(x) = −4x + 7 and g(x) = 10x − 6. Find f(g(x)). (1 point)

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jimthompson5910 jimthompson5910 · Answer 1 · 2017-08-09T00:57:51+02:00

jimthompson5910 jimthompson5910

09-08-2017

f(x) = -4x+7
f(g(x)) = -4*(g(x))+7 ... replace every x with g(x)
f(g(x)) = -4*(10x-6)+7 ... replace the g(x) on the right side with 10x-6
f(g(x)) = -4*(10x)-4*(-6)+7
f(g(x)) = -40x+24+7
f(g(x)) = -40x+31

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apologiabiology apologiabiology · Answer 2 · 2017-08-09T01:02:12+02:00

apologiabiology apologiabiology

09-08-2017

f(g(x))=
f(10x-6)=
-4(10x-6)+7=
-40x+24+7=
-40x+31

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