For the differential equation a'y' + 3x y = 13 (and assuming x > 0) the integrating factor is: (a) el (b) x2 (c) }? (d) ** (e) none of these

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.

Aword processing program requires a 7- digit registration code made up of the digits 1,2,4,5,6,7 and 9 each number has to be used and no number can be used mor than once how many codes are possible

Acircle has a radius of 12.6cm what is the exact length of an arc formed by a central angle measuring 120