Which of the following statements best describes the value of the expression 2x + 12, when x = 3? a. the result is not a whole number. b. the result is a prime number. c. the result is a composite number. d. the result is a whole number that is neither prime nor composite.

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