Will upvote all answers.
what is the range of the function?
{(3, 2), (-6, 2), (7, 3), (8, 4)}
a. {2,3,4}
b. {7,3,8,4}
c. {3,-6,7,8}
d. {3,2,-6,2}

The range is all of ur y values. Your points are set up like this (x,y).
So all ur y values in ur sets of points are : 2,3,4so that is ur range. If there are repeating y values, they only have to be written once.

$250 deductible means jane must pay the first $250 of her bill. so the insurance company paid = (80% of bill) - deductible = (0.8 x $2550) - $250 = $2040 - $250 = $1790 and jane's cost is = (bill) - (insurance payment) = $2550 - $1790 = $760