Math grade help?!?!?

Tests are 60% of my grade my test scores are: 80 / 112 (71.42%) which is a C-


Classwork is 30% of my grade my classword overall score is: 256 / 288 (88.89%) which is a B+


Projects are 10% of my grade, and so far, we havn't had any projects


OVERALL GRADE: 77.25% C+





I have a Math Test tomorrow, and I need to know the lowest possible % I can get on it to get at least a B- in Math


the Test is 40 points (I.E. If is got an A+ (100%) my test score would go from 80/112 to 120/152





Please Help.


Thanks!

Math grade help?!?!?
if you get 5 wrong on the test your grade will be 80.06%


if you get 6 wrong it is 79.63%


if you get 7 wrong it is 79.19%





so you need a B that is 85% or higher