Here are the first five terms of a different quadratic sequence. 1, 8, 21, 40, 65

Find an expression, in terms of n, for the nth term of this sequence.

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The number of fish in a lake can be modeled by the exponential regression equation y=14.08 x 2.08^x where x represents the year

Angles r and s are complementary. the measure of angle r is 31 degrees. which equation can be used to find angle s?