David owns a cafe. A mathmathical model connecting p, the profit per day from selling coffee (in dollars) and x, the price per cup (in dollars) is p(x)=-x2+30x+36 Find the profit per day if the price per cup of coffee is $1.90. Round to the nearest dollar.

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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.