Project Condor will take 84 hours across all individuals working on it to complete. On the first day, 4/7 of the project work was completed by group X. On the second day, 2/3 of the remaining project work was completed by group Y. Assuming no individual worked more than an 8-hour day and no one from group X was also in group Y, how many different people have worked on Project Condor so far?

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