I am having a party. I purchase: x pizzas, y 12-packs of soda, and z cupcakes for a party. If each pizza costs $7.50, each 12-pack of soda costs $3.25, and each cupcake cost $0.75, write an equation for the total cost, t, in terms of x, y and z.

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A: Please see the below picture for detailed solution.

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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.