10 POINTS ANSWER A-D PLEASE IM DOING A TEST... 1. The price of oranges went from $.50 per lb to $1.80 per lb in four years. Find the rate of change of the price of oranges.
a)What are the two points, (x y) given in the question?
b)What is the independent variable?
c)How do you find the rate of change?
d)Show your calculations for the rate of change.

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.