Aziraphale bought books to be shipped to his library, in case they got out of stock. He bought 36 books, each having a total of $10 dollars. The company that supplies him books gave Aziraphale a buy 6, get 60% off sale. How much money did he spend?

Which is the most efficient first step to solve x in the equation 3.7x - 18 = -4.3x -34 a. add 3.7x to both sides of the equation. b. add 4.3x to both sides of the equation. c. subtract 18 from both sides of the equation. d. subtract 34 from both sides of the equation.

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Acoin bank containing only dimes and quarters has 12 more dimes than quarters. the total value of the coins is $11. how many quarters and dimes are in the coin bank?