Whats the answer?

a. -99/20
b. 99/20
c. 44/45
d. -44/45

"princess tower" in dubai is considered the world's tallest residential building, towering to 1 0 1 101 floors! t ( n ) t(n) models the number of tenants living on floor n n of the tower. what does the statement t ( 2 0 ) = t ( c ) t(20)=t(c) mean?

Either enter an exact answer in terms of \piπ or use 3.143.14 for \piπ and enter your answer as a decimal.

How can you find the magnitude of a vector, v = < x, y > , where the horizontal change is x and the vertical change is y?