Bo and erica are yoga instructors. between the two of them, they teach 33 yoga classes each week. if erica teaches 15 fewer than twice as many as bo, how many classes does each instructor teach per week?

Christina can paint 420 square feet in 105 minutes. which unit rate describes the scenario?

Yesterday, george drank 1 small bottle and 2 large bottles, for a total of 1,372 grams. the day before , he drank 1 small bottle and 1 large bottle, for the total of 858 grams. how many grams does each bottle hold?

The ivring berlin learning center would like a possible net profit of $650,000 on its new resource manual it sells to schools. the fixed costs for producing the manual are $780,000 and the variable cost per package is $19.85. if the estimated unit sales are 1,250,000 units, what selling price unit should the ivring berlin learning center try?