The amount of money paid to the school for children is given by the following equation:
T = 10x + 7y
Equations are algebraic expressions that are characterized by having an equality, and expressions on either side of it. Equations have several uses, such as modeling problems, formulas, and graphing functions.
If in a certain school the tuition that is paid for each boy is $10 and for each girl is $7, the total value that will be paid to the school depends directly on the amount of money paid to each of them, so we only need to express it with an equation, and this will be:
xboys + ygirls = total
T = 10x + 7y
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