A stone was thrown from the top of a cliff 60 meters above sea level. The height of a stone above sea level t seconds after it was released is given by H (t) = -5t² + 20t + 60 meters. a. Find the time taken from the stone to reach its maximum height. b. What was the maximum height above sea level reached by the stone? c. How long did it take before the stone struck the water?

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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.