A motorboat can maintain a constant speed of 31 miles
per hour relative to the water. The boat makes a trip
upstream to a certain point in 37 minutes, the return trip
takes 25 minutes. What is the speed of the current?

For the rule of 78, for a 12-month period, the last term in the sequence is 12 and the series sums to 78. for an 10 month period, the last term is and the series sum is . for a 15 month period, the last term is and the series sum is . for a 20 month period, the last term is and the series sum is

Noor brought 21 sheets of stickers. she gave 1/3 of a sheet to each of the 45 students at recess. she wants to give teachers 1 1/2 sheets each.

Select all the expressions that will include a remainder.