Which expressions show how 5 • 37 can be rewritten using the distributive property? choose all answers that are correct.
a. 5 • 30 + 7
b. 5 • 30 + 5 • 7
c. 5 • 40 – 5 • 7
d. 5 • 40 – 5 • 3

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.