Remmi wrote the equation of the line y=1/3(x+2) he solved for x and got x=3y-2 which of the following is an equivalent equation for x?

Me what is the value of x? showing work would be appreciated - ! : )

Ametalworker has a metal alloy that is 30? % copper and another alloy that is 55? % copper. how many kilograms of each alloy should the metalworker combine to create 90 kg of a 50? % copper? alloy?

Solve the system of equations. y= 2x y= x^2 - 15