Agroup of 140 tourists are going on a tour. the tour guide rents 15 vans. each van holds 9 tourists. what does the remainder mean in the context of the problem?

Find the value of tan theta if sin theta = 12/13 and theta is in quadrant 2

An air conditioning system can circulate 350 cubic feet of air per minute. how many cubic yards of air can it circulate per minute?

Lance lived in portugal and brazil for a total of 14 months to learn portuguese. he learned an average of 130 new words per month when he lived in portugal, and an average of 150 new words per month when he lived in brazil. in total he learned 1920 new words. write a system of equations to represent the situation. use x to represent portugal, and y to represent brazil