SOLUTION: I have a 74.4 as a grade in my trigonometry class. I just took a final that is worth 25% of my grade. What do I need to make in order to make a B in the class? I get two points add

Question 932398: I have a 74.4 as a grade in my trigonometry class. I just took a final that is worth 25% of my grade. What do I need to make in order to make a B in the class? I get two points added to my overall grade, so I guess you could say I have a 76.4, but either way i'd like to know. Thanks!
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
x = score on final

Assume that 0.80 is the lowest threshold for a B or B-

0.744*0.75 + 0.25x = 0.80

0.558 + 0.25x = 0.80

0.25x = 0.80-0.558

0.25x = 0.242

x = 0.242/0.25

x = 0.968

So you need to get a final exam score of 96.8% or better to get an overall grade of 80% or better.
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