Alocal gym charges a membership fee of $20 then a monthly fee of $15. organize the data for the cost of gym membership for a year

Since we have computer algebra systems that can solve polynomial division problems for us, why is it necessary to learn how to do these things by hand?

Need me know if option a,b,c are wrong so ik its d

Point s has coordinates (4,2). if you rotate s 90 degrees about the origin, (0,0), what are the coordinates of s’?