Ineed the x and y intercepts with little work

Which expression is equivalent to 3^3 + 2^2?

If t8 = 4 and t12 = −2, find the first three terms of the arithmetic sequence.

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