Elaine opens a checking account with a deposit of $45.00 and wants to put the same amount of money into the account each week for 7 weeks. She wants a balance of $129 at the end of the 7 weeks. Which equation will help Elaine determine how much money she needs to deposit each week? O 7n + 129 = 45 7n + 45 = 129 7n 129 = 45 7n - 45 = 129 oo o

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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.