The height h in feet reached by a dolphin t seconds after breaking the surface of the water is given by h = -16t2 + 32t. How long will it take the dolphin to jump out of the water and touch the trainer's hand when h = 16? See Example 1. t = sec --- --- ---

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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.