Casper has some whipping cream that is 18% butterfat and some milk that is 4% butterfat. He wants to make a 500 mL mixture of them that is 12% butterfat.
Here's a graph that shows a system of equations for this scenario where I is the volume of whipping cream he
uses and y is the volume of milk he uses.

What is the next step in the given proof? choose the most logical approach. a. statement: m 1 + m 2 + 2(m 3) = 180° reason: angle addition b. statement: m 1 + m 3 = m 2 + m 3 reason: transitive property of equality c. statement: m 1 = m 2 reason: subtraction property of equality d. statement: m 1 + m 2 = m 2 + m 3 reason: substitution property of equality e. statement: 2(m 1) = m 2 + m 3 reason: substitution property of equality