Using the order of operations, what is the last calculation that should be done to evaluate 4(8 - 6)5-6=(-3)? 4(8-652–6 = ) 4(2)52 – 6 = (-3) 4(2)(25) – 6= (-3) 200 - 6 = (-3) 200 - (-2)

1. 2. ∠b and ∠y are right angles. 3.? 4.? which two statements are missing in steps 3 and 4? ∠x ≅ ∠c △abc ~ △zyx by the sas similarity theorem. ∠b ≅ ∠y △abc ~ △zyx by the sas similarity theorem. = 2 △abc ~ △zyx by the sss similarity theorem. = 2 △abc ~ △zyx by the sss similarity theorem.