Kira found a linear model for a data set. She believes her model is a good fit for the data based on the correlation coefficient. Which correlation coefficient best supports her claim?

A). r = -0.5

B). r = 1

C). r = 0

4+6x-3x^3 in standard form with explanations because i don’t understand

The system of equations graphed below has how many solutions?

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.