Did Lenora simplify the expression correctly on the lines below explain how you determine your answer

The table shows the balance of a money market account over time. write a function that represents the balance y (in dollars) after t years.

What is the anwers for 9+2x=5x-3-x

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.