Can someone help me on this question

What is x3+3x2−16x−48 divided by x−1?

Is there an x intercept in the equation 60*1.15^x

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)