In a few English sentences, provide an algorithm for performing a simple task such as making a phone call, making a sandwich, or some other short task with only a few steps. In one to two short sentences, explain what a variable is and what it is used for. In one to two short sentences, explain what a String is and what it is used for. Given the following declarations, evaluate the expressions labelled a-g below: int age = 23; double pi = 3.1415; double radius = 3; String the Bard = "Now is the winter of our discontent"; char letter = 'd'; pi * radius * radius "The quote is " + theBard.length() + " characters in length" theBard.indexOf("our") theBard.charAt(6) age * 2 age % 3 (age % 30) - (age/30) Given the following piece of Java code, give the output that would be displayed by the last line of the code: int enigma = 12; int enigma2 - enigma * 2; System.out.printIn("The value of enigma is: "+enigma)