A ball is thrown from an initial height of 5 feet with an initial upward velocity of 21 ft/s. The ball's height h (in feet) after t seconds is given by the following. h= 5+21t-161 Find all values of t for which the ball's height is 11 feet. Round your answer(s) to the nearest hundredth. (If there is more than one answer, use the "or" button.) t = -||seconds O or O ? initial height ground

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Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.