Which shows two products that both result in positive values?

33% of college students say they use credit cards because of the rewards program. you randomly select 10 college students and ask each to name the reason he or she uses credit cards. find the probability that the number of college students who say they use credit cards because of the rewards program is (a) exactly two, (b) more than two, and (c) between two and five inclusive. if convenient, use technology to find the probabilities.

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much

What is x3+3x2−16x−48 divided by x−1?