Why would an economist use real gdp rather then nominal gdp to measure growth ? a- real gdp calculates the gdp for a longer period of time b-real gdp uses current prices to measure the year's output c- nominal gdp applies to only small number of industries d- real gdp reflects output more accurately then nominal gdp by using constant prices

Asupermarket has been experiencing long lines during peak periods of the day. the problem is noticeably worse on certain days of the week, and the peak periods are sometimes different according to the day of the week. there are usually enough workers on the job to open all cash registers. the problem is knowing when to call some of the workers stocking shelves up to the front to work the checkout counters. how might decision models the supermarket? what data would be needed to develop these models?