Can someone help please?

Find percent notation for 0.008 0.008=

Acircle has a circumference of 7.850 units. what is its radius?

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)