Gloria has a lunch account in the school cafeteria. The balance, f(x), in her account can be represented by the function f(x) = –1.50x + 40, where x is the number of meals purchased. Suppose –1.50 changed to –2.75. What does this mean in the context of the problem?

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What do you think it means?

i think it means that your suppose to replace -1.50 with -2.75

and how the balance is going to increase or decrease

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