Question

3.a) How do you find the range over the given domain: f(x) = 1/2x+5 for -2 is less than or equal to -2 and 2 is greater than or equal to x??

Answer 1

well, first realize that the function that you want to find the range for is linear

this means that you only need to look at the endpoints of the domain

assuming the domain is 
 
$-2 \leq x\ \&\ 2 \geq x$
or
$-2 \leq x \leq 2$
which can be rewritten as [-2,2]

what is y when x=-2
what is y when x=2

your range is the values between those two y values