Is it possible to raise my grade?

Yesterday in math we got our progress reports. Normally I'm a straight A student in everything, but right now I have a B- in math! I have an 80.4! I ALWAYS do homework, and p in clwork on time. I this m what brought it down was the one 50% on a HW with only two questions. So far on my quizzes I've gotten an 80 and 85. On my one test I got an 80. I have a big chapter test today. If I ace it and continue to do all my hw and cw on time (and get 100's) could I bring it up to an A by the end of the year? Even an A-! Thanks!