2 A scientist wants to make 6 milliliters of a 30 sulfuric acid solution The solution is to be made from a combination of 20 sulfuric acid solution and a 50 sulfuric acid solution Review Mixture Problems Resources for help a Write a system of equations in two variables to model the relationship b How many milliliters of each solution must be combined to make the 30 solution Show your work 3 Which method of solving a system of equations graphing substitution elimination is best for the system below Explain why your choice is better than the other options You do not need to solve the system 2x 3y 4 2x 5y 6