Given the data below, use the best-fit line to extrapolate how many hours a week would need to be spent on Computer Apps to receive an A (i.e. 90%). Final Grade (Percent) 85 80 75 70 65 60 55 50 45 O I 2 Final Grade --Best-fit Final Grades vs. Hours Spent 4 X 6 Y 61.1 J X 13 Y 67.7 I 6 8 10 12 14 16 Hours Spent per Week on Computer Apps 18 20