Mark started selling snacks in the nearby school.In one day he spends 200 pesos for rent and 25 pesos each snack item he prepares.His expenses in a single day can be expressed as a function c(x)=25x+200,where x is the number of items and c(x) is his daily expenses in pesos.How much are his expenses if he prepares 100 snack items?150 snack items?

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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.