How do i solve this using substitution

Which system of linear inequalities is represented by the graph? x-3y > 6 and y? 2x + 4 x + 3y > 6 and y? 2x - 4 x - 3y > 6 and y? 2 - 4 x + 3y > 6 and y > 2x + 4 no be 2 -1.1 1 2 3 4 5 submit save and exit next mark this and retum be

An ulcer medication has 300 milligrams in 2 tablets. how many milligrams are in 3 tablets?

What is the value of m in the equation 1/2 m - 3/4n=16 when n=8