Greg is selling T-shirts for the basketball team as a fundraiser. The total amount earned for the team ,y, is proportional to the number of t-shirts ,x, Greg sales. The team earns $7.50 for each t-shirt sold. Which equation represents the total amount Greg earns for the team?A) y=$7.50/xB) y=x+$7.50C) y=$7.50xD) y=x/$750