Calling Class Methods Practice Test

Consider the following class for student records. The StudentRecord class has addGrade(double points) and calculateGpa(int numClasses) that returns totalPoints / numClasses. It also has getName() that returns the student name. A program instantiates StudentRecord r = new StudentRecord("Liam"); then calls r.addGrade(9.0). The expected output of calculateGpa depends on the parameter value. If calculateGpa(3) is called, what is the expected result?

Consider the following class for a library system. The Library class has issueBook() that decreases copies by 1 only when copies > 0, and getCopies() that returns copies. A program instantiates Library lib = new Library("1984", 1); then calls lib.issueBook() twice. The expected output of getCopies() reflects that the second issue may not occur. If getCopies() is called after both calls, what is the expected result?