Which expression shows 27 + 36 as the product of their greatest common factor and the sum of two whole numbers with no common factor?
a) 7(3+6)7(3+6)
b) 9(4+5)9(4+5)
c) 9(3+4)9(3+4)
d) 7(4+5)7(4+5)

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.

X+y=-4 x-y=2 use elimination with adding and subtraction

Aschool allots ? 1500 to spend on a trip to the theatre. theatre tickets have a regular cost of ? 55 each and are on offer for 1 5 off. a train ticket for the day will cost ? 12 each. if 2 teachers and the maximum number of students attend, how much money will the school have left over?