When i was 6 my sister was half my age

now i'm 70 how old is my sister?

If anyone has done the algebra 2 chaos theory portfolio would you be wiling to me? i kind of know what i'm doing i just don't know if i'm doing it right.

Pat listed all the numbers that have 15 as a multiple write the numbers in pats list

If the scale factor between two circles is 2x/5y what is the ratio of their areas?