X+ 78 = 80 what does "x" equal? explain !

Billy plotted −3 4 and −1 4 on a number line to determine that −3 4 is smaller than −1 4 .is he correct? explain why or why not

To solve the system of equations below, pedro isolated the variable y in the first equation and then substituted it into the second equation. what was the resulting equation? { 5y=10x {x^2+y^2=36

At your job you're paid $50 per week plus $3 per sale at least how many saled do you need to make in order to have over $250