In Exercises 73 and 74, write an event procedure with the header pr iva benDisplay-ciick(..) Handles btnDisplay.Click, and having one, two, or three for each step. Lines that display data should use the given variable names. 73. Inflation The following steps calculate the percent increase in the cost of a typical grocery basket of goods: (a) Declare the variables begOfYearCost, endOfYearCost, and percentlncrease as Decimal. (b) Assign 200 to the variable begOfYearCost (c) Request the cost at the end of the year with an input dialog box, and assign it to the variable endOf YearCost (d) Assign (endOf YearCostbegOfYebegOfYearCost to the variable percentincrease. (e) Display a sentence giving the percent increase for the year. 74. Walk-a-Thon The following steps calculate the amount of money earned in walk-a-thon: (a) Declare the variables pledge and miles as type Decimal. (b) Request the amount pledged per mile from an input dialog box, and assign it variable pledge. (c) Request the number of miles walked from an input dialog box, and assign it to the variable miles (d) Display a sentence giving the amount to be paid. In Exercises 73 and 74, write an event procedure with the header pr iva benDisplay-ciick(..) Handles btnDisplay.Click, and having one, two, or three for each step. Lines that display data should use the given variable names. 73. Inflation The following steps calculate the percent increase in the cost of a typical grocery basket of goods: (a) Declare the variables begOfYearCost, endOfYearCost, and percentlncrease as Decimal. (b) Assign 200 to the variable begOfYearCost (c) Request the cost at the end of the year with an input dialog box, and assign it to the variable endOf YearCost (d) Assign (endOf YearCostbegOfYebegOfYearCost to the variable percentincrease. (e) Display a sentence giving the percent increase for the year. 74. Walk-a-Thon The following steps calculate the amount of money earned in walk-a-thon: (a) Declare the variables pledge and miles as type Decimal. (b) Request the amount pledged per mile from an input dialog box, and assign it variable pledge. (c) Request the number of miles walked from an input dialog box, and assign it to the variable miles (d) Display a sentence giving the amount to be paid