Sara had $108 to spend on 8 books. After buying them she had $12 left. Let b represent the cost of each book. Which equation represents this situation?

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Paul’s car is 18 feet long. he is making a model of his car that is 1/6 the actual size. what is the length of the model?

If you double the input of a function and it results in half the output, and if you triple the input and it results in a third of the output, what can be guessed about the function? check all that apply.