So my online school is saying I have about 9 hrs of work to do in 4 classes, and I only have 5 hrs availible in my day to do this in. Any suggestions? This work is due today

Do as much as you can (do the easy ones first) and then do when your in bed and do the rest the next day before class.

type of error:

the error in the sentence is a "dangling modifier". a dangling modifier is a phrase, word or clause that "dangles" because there is not target to modify. in this case, "after mopping the floor" is the dangling modifier since it has no word to modify. the noun "house" cannot mop the floor; therefore there is a mistake in the writing of the sentence.