A tennis court is divided into rectangular sections. The doubles alleys are the areas on either side of the court used for doubles games. The rest of the court is the singles court. Each service box is identical in shape and has a perimeter of 69 feet.

Explain why the function is discontinuous at the given number a. (select all that apply.) f(x) = 1 x + 1 a = −1 f(−1) is undefined. lim x→−1+ f(x) and lim x→−1− f(x) exist, but are not equal. lim x→−1 f(x) does not exist. f(−1) and lim x→−1 f(x) exist, but are not equal. none of the above

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What is the 12th term of b(n)=-4-2(n-1)