Write a method that computes the value of an arithmetic expression. The operator string should be one of ("+", "-", "*", or "/"). The method should throw an IllegalArgumentException otherwise. Also throw an IllegalArgumentException if the operator is "/" and the second argument is zero.

Acase study allows a more detailed look at the life of a single subject than any other study.

When creating a presentation in libre office impress, where does the editing of slides take place? a. the slides panel b. the center panel c. the tasks panel, under the masters pages tab d. the tasks panel, under the layouts tab

Jason works as an accountant in a department store. he needs to keep a daily record of all the invoices issued by the store. which file naming convention would him the most? a)give the file a unique name b)name the file in yymmdd format c)use descriptive name while naming the files d)use capital letters while naming the file