make an equation

______(fill in with the amount total of all the gardes. ex 435.)

______+ X= (for a- 285) for b- 255 so on and so forth. subrtact the amount of the left from the one on the right. then you get X= ____ . then you know the exact lowest score you can get in order to get a A, B or C.How do i figure out what grade i need in my last Grading Period in order to get an A, B, or C overall??

Take your 3-period average, multiply it by 3, then take your desired final average and multiply it by 4, then subtract. The answer is what you'd need in the fourth period to get your desired grade.

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