The Excel function that adds all the numbers in a range of cells is the ________ function

A(n) ________ is an application with specific functionality geared toward accomplishing a specific goal

Fill in the blank(s) with the appropriate word(s).

Raina complains to Marc that her smartphone seems to be warped or something and now her back cover doesn't seem to sit right. What is the problem?

A) Water has penetrated the case. B) The battery needs to be replaced. C) The system needs a factory reset. D) Marc has put the wrong smartphone backing on.