I think the answer is 3 < x < 8. Make sure to have the underlines underneath the < signs!
Where is the persons info
Use the site called Desmos, it's a graphing calculator and should help you in all the ways you need. It isn't complex. Just put that equation in a box and it graphs it for you.
Answer:
$9,960
Step-by-step explanation:
249000 x 0.4 = 9960