What is the total lento of all the crystal in the bracelet ?1/2,5/8,3/4,1/2,3/8,1/2,3/4,3/8,3/ 4,5/8,1/2,3/8,5/8,3/4

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.

How long must $542 be invested at a rate of 7% to earn $303.52 in interest? in a easier way

4. jake needs to score in the top 10% in order to earn a physical fitness certificate. the class mean is 78 and the standard deviation is 5.5. what raw score does he need? z value for top 10% =1.282 how do i get the z value? what is the equation for this? raw score =mean+z*sd = 78+1.282*5.5 = 85.051