2m + 2n - 4r = 4
m - 2n + 3r = -4
-7m + 20n - r= 2

Beth makes batches of bluberry muffins and banna muffins. each batchis 6 muffins. she makes 2.5 batches of bluberry muffins. how many batches of bananna muffins should beth make if she wants to have a total of 60 muffins?

Billy plotted −3 4 and −1 4 on a number line to determine that −3 4 is smaller than −1 4 is he correct? explain why or why not?

Solve each equation using the quadratic formula. find the exact solutions. 6n^2 + 4n - 11