Each box holds 10 cartons of milk there are 300 cartons of milk how many boxes are there

Ineed if you could explain and give me the answer you! this needs done

Aculture started with 3000 bacteria. after 5 hours it grew to 3900 bacteria. predict how many bacteria will be present after 9 hours

Sketch the region enclosed by the given curves. decide whether to integrate with respect to x or y. draw a typical approximating rectangle and label its height and width. y= 5x, y=7x^2then find the area s of the region.