Question 877599
Final is worth 15%
Rest of classwork is worth 85% (since 100 - 15 = 85)



Let x = grade on final



0.87*0.85 + x*0.15 = 0.85



0.7395 + 0.15x = 0.85



0.15x = 0.85 - 0.7395



0.15x = 0.1105



x = 0.1105/0.15



x = 0.73666666666667



So you need to get at least <font color="red">73.666666666667%</font> on the final to get an 85% or better as an overall grade.