PLS HELP ON THIS QUESTION I WILL MARK YOU AS BRAINLIEST IF YOU KNOW THE ANSWER!! The number of rare coins a coin collector owns is considered data.
A. discrete
B. continuous
C. neither continuous nor discrete
D. both continuous and discrete

Ineed to know the answer to this algebra question.

With finding limits of multi variable !

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