SOLUTION: Missed class on this section. Any help will be appreciated Let f(x)=3x-5 Find the following. (a)f(3) (b)f(h) (c)f(3)+f(h) (d) f(3+h) Can you please show the work so I c

Question 930469: Missed class on this section. Any help will be appreciated
Let f(x)=3x-5 Find the following.
(a)f(3) (b)f(h) (c)f(3)+f(h) (d) f(3+h)
Can you please show the work so I can complete more problems like this.
Thanks
Answer by nerdybill(7384) (Show Source): You can put this solution on YOUR website!
Let f(x)=3x-5 Find the following.
(a)f(3) (b)f(h) (c)f(3)+f(h) (d) f(3+h)
.
(a)f(3)
replace x with 3 and evaluate:
f(x)=3x-5
f(3)=3(3)-5
f(3)=9-5
f(3)=4
.
(b)f(h)
replace x with h and evaluate:
f(x)=3x-5
f(h)=3h-5
.
(c)f(3)+f(h)
from (a): f(3)=4
from (b): f(h) =3h-5
so
f(3)+f(h)=4 + 3h-5
f(3)+f(h)=3h-1
.
(d) f(3+h)
replace x with 3+h and evaluate:
f(x)=3x-5
f(3+h)=3(3+h)-5
f(3+h)=9+3h-5
f(3+h)=3h+4

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