What is the COEFFICIENT in this expression: 45 - 2y *

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

Daniel expanded the expression as shown below -2(-8x-4y+3/4)=-10x-8y-11/4 what errors did he make? check all that apply

The candy store is having a 30% off sale. emma is going to buy $7.50 worth of candy.how much will she pay after the discount