Question

Find the range of the function for the given domain:
f(x)= 2x+7 {5,18,-5}

Answer 1

To find the range, I beleive the only way is to map it out. Sketch it on Excel if you know how or do it by hand by replaying some numbers in as x.

The way it looks now is that your function is everywhere on the reals except for 5.16 and -5 so you would write: \[x \in \mathbb{R}/\left\{ 5,16,-5 \right\}\]

Answer 2

replacing* but in this case, its an easy function, you know its on all the reals execpt for those ones

Answer 3

i figured it out in an easier way, i just used each number and replaced x with them...