Mr. Smith is trying to decide how many bags of candy to buy for Halloween. Each bag costs $4. Which ordered pair is a viable solution if x represents the number of bags he buys and y represents the total cost of the bags?

a (-.5, -6)
b (1.5, 6)
c (-4, -16)
d (0,0)

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.