Answer:
(0.5, 1.5)
Step-by-step explanation:
(x1 + x2 /2, y1 + y2/2)
(-4 + 5 / 2, 4 - 1/2)
(1/2, 3/2)
20.00-(15*1.23)=$1.55
7x6+5=47
6x5+7=37
7x5+6=41
$33 for 11 packs of paper