How much will you need to invest each year over the next 40 years in order to meet your savings goal of $750,000, assuming you average a 7% real rate of return each year?

Aslam wants to create multiple worksheet containing common formatting styles for his team members. which file extension him to save these worksheets? [templates,workbooks,files] aslam to create multiple worksheets with common styles. he needs to save them with the [xlsb,xlts,xls,xlsm] extension.