Write a java program to implement the following expression using the scanner class and the JOptionPane class 1. 3a+7 /4a-2​

Assume the existence of a bankaccount class. define a derived class, savingsaccount that contains two instance variables: the first a double, named interestrate, and the second an integer named interesttype. the value of the interesttype variable can be 1 for simple interest and 2 for compound interest. there is also a constructor that accepts two parameters: a double that is used to initialize the interestrate variable, and a string that you may assume will contain either "simple", or "compound", and which should be used to initialize the interesttype variable appropriately. there should also be a pair of functions getinterestrate and getinteresttype that return the values of the corresponding data members (as double and int respectively).

How do we use the sumif formula (when dealing with different formats) ?

Alison is having a hard time at work because hee inbox is flooded with emails every day. some of these emails are unsolicited. some of other she don’t need. which action should she take to better manager her emails?