6b-4a+4a-17b+b
Need help

What is best way to getting answer for my exam is

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)

F(x)=5/6x+3 which of the following is true