Which correctly explains how to solve this problem? a number is multiplied by 2. eight is added to the product. this sum is then divided by 5. the answer is 8. what was the original number? a. start with 8. multiply 8 by 5. then add 8 and multiply the answer by 2. b. start with 8. add 8 and 5. then subtract 8 and multiply the answer by 2. c. start with 8. multiply 8 by 5. then subtract 8 and divide the answer by 2.

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