You were billed $28.50 $ 28 . 50 for additional data usage on your cell phone at a rate of $9 $ 9 per gigabyte. three choices are correct ways to calculate the additional gigabytes, g , that you used. which choice is not?

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.