25 7/8 - 8 7/8 please hurry

To solve the system of equations below, grace isolated the variable y in the first equation and then substituted into the second equation. what was the resulting equation? 3y=12x x^2/4+y^2/9=1

Zahra runs a 500-meter race at a constant speed. which graph shows her distance from the finish line during the race?

Paper plates cost $8 per package and plastic utensils cost $5 per package. your supplier delivers 15 packages for a total cost of $90.