Answer:
try powering it off the turn it back on
Explanation:
A formula in Excel will ALWAYS start with = then the function name like
=SUM(A1:A5)
a hard copy stores data and information in the form of physical files it may be images text photographs and more a soft copy data and information in the form of virtual file saved on a computer or a drive you can preserve a hard copy for two long because its day subjected to wear and tear