What situation can be represented by y=12x-4 a. the number of eggs, y, in x dozen eggs for sale after 4 dozen eggs are sold b. the cost, y, of buying x movie tickets that sell for 8$ each c. the cost, y, after a 4$ discount of buying x tshirts that sell for 12 $ each d. the number of inches, y, in an x football tree after cutting off 4 feet

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