This is an expression 3.2.t Evaluate the expression when t = 1

The circle below is centered at the point (3, 1) and has a radius of length 2. what is the equation?

Which of the following is the major negative aspect of crossover designs for research studies? a. prohibitive cost b. residual effects c-subject drepout d. incomplete randomization e. large sample size required

24m^2n+30mn^2+18mn, a sweet challenge!