During a 4-hour drive a trucker driver traveled at the rate of 40 miles per hour for the first hour and 70 miles per hour for the following 3 hours. which is closest to the average rate the truck driver traveled durind these 4 hours.

Nina has prepared the following two-column proof below. she is given that ∠oln ≅ ∠lno and she is trying to prove that ol ≅ on. triangle oln, where angle oln is congruent to angle lno nina made two errors in the proof. identify and correct the errors.