If I understand this correctly I would say $105. Hope this helps. :)
Answer:

Step-by-step explanation:




Domain is everything below 0. Range is all real numbers. It is a function as it passes the vertical line test.
Answer:
$35,000
Step-by-step explanation:
if $50,000 is to install an area of 1,000 square feet swimming pool and $35,000 can be used to install an 800 square foot swimming pool I think the best graph model is 800 square feet for $35,000 for a cost cut of $15,000 is a good bargain