Question

If h(x) = 3x - 4, find each of the following:
a) h(2)
b) h(a + 2)

Answer 1

Put value 2 for x and solve it
Same idea x=a+2 and solve it

Answer 2

.... i still dont get it

Answer 3

you see where h(x) is? basically for part a and b, all your doing is substituting part a in where the h(x) is and solve for it, same thing with part b.

it might look like this
2 = 3x-4

(a+2)=3x-4

For part all just add the 4 to the to and then divide the x.

Answer 4

f(2)=3(2)-4=6-4=2
f(a+2)=3(a+2)-4
= 3a+6-4
=3a+2