In Jackson's statistics class, the final grade is a weighted mean of a homework grade, three midterm exam grades, and a final exam grade. The homework
counts for 19% of the final grade, each midterm counts for 20%, and the final exam counts for 21%. Jacob got a score of 52 on the homework, 83, 46, and 67
on the three midterms, and 84 on the final. What is Jacob's final grade? Round to I decimal place