Question 100678
Find each value if f(x)=7x+2 and g(x)=4x-x/2.

1. f(-7)   2. g(8)   3. f(8/14)    4. g(-6n)

You substitute what is in parentheses in place of x.
I'll do 3 and 4. then you can do 1 and 2.
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3) f(8/14)=7*(8/14)+2
=56/14+2=4+2=6
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4)g(-6n)=4(-6n)-(-6n)/2
=-24n+6n/2=-24n+3n=-21n
Ed