Please help with via math I suck at math so plz help... will give brainiest to the person I think gave the best answer.

What is the approximate mark up percentage rate before m equals $1740 marked up from p equals $19,422

Astudent solves the equation for v. start with the original equation. use the square root property. use the division property of equality. use the multiplication property of equality. simplify. which statement explains how to correct the error that was made? the square root property must be applied after all other properties of equality are applied. the multiplication property of equality should have been applied before the division property of equality. the division property of equality should have been applied to move the fraction to the other side of the equation. the square root property should have been applied to both complete sides of the equation instead of to select variables.

How to slove in standard form 1x+2y=-8