0 04.(7 points) Write appropriate method headings for the following methods: a. Calculate and return the sum of two decimal numbers. ompute and return the average speed of a car, given the distance traveled (as in int) and traveling time (in hours and minutes of type int) Given the radius of a circle, output the area of the circle. c. d. Given a student's name and three test scores (of type int), output the e. Given a number, return true if the number is a prime; otherwise, f. Given the cost of an item and the sales tax (as a decimal number), return g. Given a decimal number, output the square root if the number is What is the output of the following program? student's name and average test score. return false the total sale price. nonnegative; otherwise, output an appropriate error message