Avery has aleady spent 1 minute on the phone, and she expects to spend 3 more minutes with every phone call she routes. Write an
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Step-by-step explanation: The letter "x" is often used in algebra to mean a value that is not yet known. It is called a "variable" or sometimes an "unknown". In x + 2 = 7, x is a variable, but we can work out its value if we try!
