please help



Your mom gives you $30 to buy some books. Write the money you have left as a function of the cost of books. Let
b represent the cost of books, and s represent the money you have left.

please help Your mom gives you 30 to buy some books Write the money you have left as a function of the cost of books Let b represent the cost of books and s rep class=
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Respuesta :

Answer:

D

Step-by-step explanation:

because b - 30 = s your buying something and subtacting from the money you had before