Loral received all her grades for the semester (in parentheses) along with the weight for each grade, shown below. what is her final grade? weight 45% = 3 tests (80%, 75%, 92%) 25% = final (88%) 15% = paper (91%) 15% = 2 oral quizzes each worth 25 points (22, 19)

For 45%:
 (80 + 75 + 92) / 3 = 82.33%
 (0.8233) * (0.45) = 0.370485
 For 25%:
 (0.88) * (0.25) = 0.22
 For 15%:
 (0.91) * (0.15) = 0.1365
 For 15%:
 ((22/25) + (19/25)) / (2) = 0.82
 (0.82) * (0.15) = 0.123
 Adding we have:
 (0.370485) + (0.22) + (0.1365) + (0.123) = 0.849985
 The final note is:
 0.849985 * 100 = 84.9985%
 
 her final grade is:
 84.9985%

What's the denominator