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Evaluate f[g(x)] when f(x)=7x-5 and g(x)=x+2
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5 votes
Evaluate f[g(x)] when f(x)=7x-5 and g(x)=x+2

User Schwierig
by
3.7k points

1 Answer

4 votes

Answer:

7x+9

Explanation:

f(x)=7x-5

g(x)=x+2

f[g(x)]= Substitute g(x) in for x in the function f(x)

=7(g(x))-5

= 7( x+2) - 5

Distribute

= 7x+14 - 5

Combine like terms

=7x +9

User Giuseppe Schembri
by
3.7k points
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