Find the center and radius of this circle

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)

Petes dog weighed 30 pounds it then lost 16% of it's weight how much did pete lose

Im so bad at fractions they are not my best math thing to work on