The value of f(x)= 5x -4x²+3 when x= -1, is​

"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?

How many lines can be drawn through points j and k? 0 1 2 3

Any is very appreciated! (picture is provided below)not sure how to do this at all won't lie