16 14 12 12 16 20 Units of Electricity Used Which statement is true of Jeana's monthly electricity bill? For every 15 units of electricity used monthly, the charge is $0.10. For each unit of electricity used, the charge is $10 plus $15 for the first month. B. C. Jeana has to pay $15 for each unit of electricity used and a $0.10 fixed monthly charge. Jeana has to pay $1 for every 10 units of electricity used plus a $15 fixed monthly charge. Amount Charged (in do

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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.