The profits for the week was $1200. the amount spend was $975 . find the revenue for the week

4+6x-3x^3 in standard form with explanations because i don’t understand

This is about circle theorems. someone asap : (

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.