18. Given the following statement: double discount=0.15, price=1.79; Write a printf statement using format specifiers that will produce the following output: Chips 15% off| $1.521 Note: the column width (between two vertical bars) is 30 characters in total. 19. What is the value returned by Math.pow(3,2), Math.sqrt(9), Math.round(-3.6), Math.ceil(-3.2), Math floor-38)resnectively