A new car worth $45,000 is depreciating in value by $5000 per year. Solve, a. Write a formula that models the car’s value, y, in dollars,after x years. b. Use the formula from part (a) to determine after how many years the car’s value will be $10,000.

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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.