X= the tension (psi) at which a randomly selected tennis racket has been strung, where m = the minimum possible tension and m = the maximum possible tension describe the set of possible values for the variable. m, m+1, m−1, m (m, m) [m, m] m+1, m−1 state whether the variable is discrete. discrete not discrete (h) x = the total number of times three tennis players must spin their rackets to obtain something other than uuu or ddd (to determine which two play next) describe the set of possible values for the variable. [1, [infinity]) 3, 6, 9, [3, [infinity]) 1, 2, 3, state whether the variable is discrete. discrete not discrete