write a select statement that returns columns vendorname invoicecount and invoicesum group the result set by vendor

The “rule of 72” is used to approximate the time required for prices to double due to inflation. if the inflation rate is r%, then the rule of 72 estimates that prices will double in 72/r years. for instance, at an inflation rate of 6%, prices double in about 72/6 or 12 years. write a program to test the accuracy of this rule. for each interest rate from 1% to 20%, the program should display the rounded value of 72/r and the actual number of years required for prices to double at an r% inflation rate. (assume prices increase at the end of each year.)

Im doing this last minute and literally none of my neighbors or people that my dad works with use excel so if anyone could me make up an example

In which part of a professional email should you try to be brief, but highly descriptive?