A farmer has 400 m of fencing and wants to enclose a rectangular field bordering a river, with no fencing needed along the river. Let x represent the width of the field. Complete parts (a) through (d) below. (a) Write an expression for the length of the field. Let the length of the field be the distance along the river. L(x) =

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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.