100 points! PLEASE HELP and EXPLAIN

Which sum or difference identity would you use to verify that cos (180° - ∅) = -cos ∅? a. sin (α -β) = sin α cos β – cos α sin β b. cos (α -β) = cos α cos β – sin α sin β c. cos (α -β) = cos α cos β + sin α sin β d. sin (α + β) = sin α cos β + cos α sin β

Kira looked through online census information to determine the overage number of people living in the homes in her city what is true about kira's data collection?

Describe how to translate the graph of y=/x to obtain the graph of y=/x+5