Show your answers pls!

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.

Car a and car b were in a race .the driver of car b claimed that his car was twice as fast as car a

The function f(x)= -(x+5)(x+1) is down. what is the range of the function?