Hey guys can you please help me?? Thank you!

If a baby uses 15 diapers in 2 days how many diapers will the baby use in a year

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.

Determine domain and range, largest open interval, and intervals which function is continuous.