Which are challenges for study groups? Check all that apply. lack of focus during meetings too many new perspectives problems with communication lack of commitment to duties overly motivated participants

Let r(t) represent the rate, in square feet per minute, at which a groundskeeper is mowing a lawn t minutes after 3 p.m. what expression represents the area, in square feet, of the lawn that is mowed between 3 p.m. and 5 p.m.?