Given the function f(x) = 3x - 21 + 6, for what values of x is f(x) = 18?
x= -2, x = -8
x= -2, x = -6
x= -2, x = 6
x= -2, x = 8

Simplify (a/b - b/a) times (a - a^2/a+b) a - a^2/a=b is a mixed number

Sheila wants to bake six muffins but the recipe is for 12 muffins . this means you only need half of the ingredients listed how much of the of each ingredient does she need? one cup and banana chips ,7 tablespoons oil , two eggs, 3/4 cups flour 1/4 cup walnuts show all you work and justify your answer using a baby toulmin.

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10