Suppose a student's final grade in a biology course is determined using the following weights:

Quizzes are worth 5%

Exam 1 )is worth 20%

Exam 2 is worth 20%

Lab reports are worth 15%

Research paper is worth 15%

Final exam is worth 25%

Just before the final, they have earned the following grades (all out of 100):

Quiz grades: 85, 80, 0, 60, 70, 80, 80, 75

Exam 1: 80

Exam 2: 70

Lab report grades: 75, 90, 85, 69, 70, 75, 80, 75

Paper: 85

c. What is their course average just before the final? (2 pts)

d. For a B they need a course average of at least 82%. What is the lowest grade they can get on the final and achieve that goal? (2 pts)