Why do we allow electronic instruments to warm-up before use?

Sam is a data analyst at an advertising firm. he often uses a spreadsheet that contains media ratings details. he would like to filter the spreadsheet data based on different filter criteria. which operators can he use to specify the combination of filter criteria? sam can use the ( blank ) operators to specify a combination of filter criteria.

In the film "epic 2015," epic is the name for:

Aplan to budget time for studying and activities is referred to as a study routine. study habits. study skills. a study schedule.