Compute the n-th term of a closed-form sequence — polynomial, alternating-sign, factorial, and rational forms. Standards: AP Calculus BC Unit 10 — LIM-7.A (sequence terms). This is a self-checking worksheet. Each problem has a matching answer in the design grid above; as students shade in their answers, a symmetrical pattern appears. If the pattern looks right, the work is right — students catch their own mistakes before turning it in, and you can spot-check the page at a glance. Works for class