Exam
Name___________________________________

ESSAY.  Write your answer in the space provided or on a separate sheet of paper.
Solve the problem.
1) Elaine gets quiz grades of 71, 75, and 64. She gets a 60 on her final exam. Find the weighted mean if the quizzes each count for 20% and the final exam counts for 40% of the final grade. Round to one decimal place.

2) Michael gets test grades of 73, 77, 82, and 86. He gets a 93 on her final exam. Find the weighted mean if the tests each count for 15% and the final exam counts for 40% of the final grade.  Round to one decimal place.

3) The federal government requires a car manufacturer to have a minimum miles per gallon (mpg) average over the cars it makes. Suppose that the models and mpg's for a manufacturer are Corsair (9 mpg), Futura (8 mpg), Retro (16 mpg), and Envy (26 mpg). Twenty percent of the cars sold are Corsairs, 30% are Futuras, 40% are Retros, and 10% are Envys. Find the average mpg for this manufacturer.

1) 66.0
2) 84.9
3) 13.2 mpg