Question

Kara has five exam scores of 56, 80,63, 57, and 66 in her biology class. What score does she need on the final exam to have a mean grade of 707 Round your answerto two decimal places, if necessary. (All exams have a maximum of 100 points)

Answer 1

OK

Values = 56, 80, 63, 57, 66

Mean = 70?

70 = (56 + 80 + 63 + 57 + 66 + x) / 6

Solve for x

70(6) = 322 + x

420 = 322 + x

x = 420 - 322

x = 98

She needs to get 98 on her final test