Of the methods for solving systems of equations, which is best used when one equation is solved for either x or y, or can easily be solved for x or y? A .Graphing

B. Elimination

C. None of the methods are appropriate for this situation.

D. Substitution

Achemist has 200 ml of a 10% sucrose solution. she adds x ml of a 40% sucrose solution. the percent concentration, y, of the final mixture is given by the rational function: the chemist needs the concentration of the final mixture to be 30%. how many milliliters of the 40% solution should she add to the 10% solution to get this concentration?

In the xy-plane, if the parabola with equation passes through the point (-1, -1), which of the following must be true?

Write the slope intercept equation for line ab.