Determine which relation is a function. A) (2,3),(7,0),(0,-8),(7,-2)
B) (4,2),(6,-5),(3,2),(-1,4)
C) (-3,2),(-9,0),(4,2),(-9,2)
D) (1,-3),(3,-1),(-1,-3),(3,3)

Hart manufacturing had six-month sales of $80 million, with $20 million of that amount from the internet. it set a goal to increase the percentage of total sales coming from the internet by 4 percent in the next six months. the results were total sales of $85 million. if the company meets its goal exactly, what will the dollar amount of internet sales be?