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Question

For the pair of functions,
f(x)=9x−4,g(x)=7x−9
Find (f−g)(x).

A
16x13
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B
2x+5
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C
2x13
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D
2x5
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Solution

The correct option is B 2x+5
(fg)(x)=f(x)g(x)=9x47x+9=2x+5

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