exercises for help with exercisesplease visit the sitewww wiley com/college/goodrich reinforcement - give three examples of life-critical software applications - give an example of software application in which adaptability can mean the difference between prolonged lifetime of sales and bankruptcy - describe component from text-editor gui and the methods that it encapsulates - write python classflowerthat has three instance variables of type strintand floatthat respectively represent the name of the flowerits number of petalsand its price your class must include constructor method that initializes each variable to an appropriate valueand your class should include methods for setting the value of each typeand retrieving the value of each type - use the techniques of section to revise the charge and make payment methods of the creditcard class to ensure that the caller sends number as parameter - if the parameter to the make payment method of the creditcard class were negative numberthat would have the effect of raising the balance on the account revise the implementation so that it raises valueerror if negative value is sent - the creditcard class of section initializes the balance of new account to zero modify that class so that new account can be given nonzero balance using an optional fifth parameter to the constructor the four-parameter constructor syntax should continue to produce an account with zero balance - modify the declaration of the first for loop in the creditcard testsfrom code fragment so that it will eventually cause exactly one of the three credit cards to go over its credit limit which credit card is itr- implement the sub method for the vector class of section so that the expression - returns new vector instance representing the difference between two vectors - implement the neg method for the vector class of section so that the expression - returns new vector instance whose coordinates are all the negated values of the respective coordinates of