Steve approached a toll-booth which charges $1.25. In his change compartment, he only had nickels and dimes, and had the exact change needed to pay the toll. How many nickels and dimes did he have? (One new piece of information): There are 22 total coins.

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A: Let's find. 

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A: solution

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Q: You are an accountant for a manufacturer of radios.  The demand function for the tablets is p=40-4x^...

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