How many significant figures are in 25.3?

Can someone check if i did this correct. it’s number 4 if you’re wondering.

Dean and karlene get paid to write songs. dean is paid a one-time fee of $20 plus $80 per day. karlene is paid a one-time fee of $25 plus $100 per day. write an expression to represent how much a producer will pay to hire both to work the same number of days on a song.

If you prove that ∆wxz is congruent to ∆yzx, which general statement best describes what you have proved?