11) Write an equation that models the following problem. Then use your equation to solve the problem. A helicopter used in fighting a forest fire travels at 105 mi/h from the fire to a pond and 70 mi/h with water from the pond to the fire. If a round trip takes 30 min, how long does it take from the pond to the fire? (Remember, distance = rate x time). 105 mi/h 70 mi/h 30 min

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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.