Help Which answer do I pick?

Ineed with number 17 i don’t get it at alll

Which function can be used to model the monthly profit for x trinkets produced? f(x) = –4(x – 50)(x – 250) f(x) = (x – 50)(x – 250) f(x) = 28(x + 50)(x + 250) f(x) = (x + 50)(x + 250)

Which property was used to simplify the expression? 3c+9 +4c=3c+4c+9