Objects detected by radar are plotted in a coordinate plane where each unit represents 1 mile. The point $(0,0)$ represents the location of a shipyard. A cargo ship is traveling at a constant speed and in a constant direction parallel to the coastline. At 9 A. M., the radar shows the cargo ship at $(0,15)$ . At 10 A. M., the radar shows the cargo ship at $(16,15)$ . How far is the cargo ship from the shipyard at 4 P. M.?

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