How to find slope of tangent line at a given point?

Enter the number of complex zeros for the polynomial function in the box. f(x) = x+ + 5x² +6

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.

Which of these tables represents a non-linear function?