exam Maths Puzzle Numerical Ability

can you help me with this problem 22+x+y=3 22x + 36y = 356 university of phoenix elementary and intermediate algebra

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3.7 is it greater that or less than to the number 3.71 ? A few years ago, Chicago institute a new area code of 971 so that more phone numbers could be assigned. How many seven digit phone numbers can be formed using this area code if the