What is the value of y in the solution to the system of equations? 1/3x + 1/4y = 12x - 3y=-30

Twenty-five percent of the customers entering a grocery store between 5 p.m. and 7 p.m. use an express checkout. consider five randomly selected customers, and let x denote the number among the five who use the express checkout.

Which term best describes the association between variables a and b

Graph y ≥ -x^2 - 1. click on the graph until the correct graph appears.