3 Grades [15 marks] In the provided Grades. java files, complete the finalExamGradeNeeded method. This method takes several input parameters: a target letter grade (String), a list of assignment grades (double 0) a list of tutorial grades (double C]) and a list of midterm grades (double]). The method returns the minimum grade needed on the final exam to achieve the target letter grade based on the other input grades. You must use the grading scheme as specified in the course outline. Be careful to read and understand the condition for passing the course. If the needed final exam grad is more than 100.0 then the method should return -1.0. If the target grade will be achieved (or surpassed) regardless of the final exam mark, the method should return 0.0. A table showing the relationship between letter grades and numerical grades is shown beloy Note that a square bracket indicates that the end value is included in the range and the parenthesis indicates that it is not included. So, [80, 85) is all values z satisfying 80 S