You went shopping for batteries. your bill was $14.39. how many 9-volt batteries did you purchase at $2.39 each if aa batteries cost $1.61 each and you purchased 3 of them ?

If 1/√5+1/√5+1=p+q√r , find the values of p, q and r

It took alice 5 5/6 hours to drive to her grandparents' house for . on the way home, she ran into traffic and it took her 7 3/8 hours. how much longer did the return trip take? write your answer as a proper fraction or mixed number in simplest form. the trip home took __hours longer. ?

65% of students in your school participate in at least one after school activity. if there are 980 students in you school, how many do not participate in an after school activity?