Find the interval of convergence of the power series, where and k is a positive integer. (Be sure to include a checkfor convergence at the endpoints of the interval. Enter your answer using interval notation.)

Raymond just got done jumping at super bounce trampoline center. the total cost of his session was $43.25 . he had to pay a $7 entrance fee and $1.25 for every minute he was on the trampoline. write an equation to determine the number of minutes (t) that raymond was on the trampoline.