a newsstand sells the newyork times for 75 cents per copy and the washington post for 60 cents per copy. if the stand sells 177 newspaper and the total money earned was 118.80 how many of each paper was sold

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First step is to get rid of the square root. remember that a square root is the same as raising to the (1/2) power. see below: multiply exponents per exponent rules to get: remember you subtract exponents from the denominator and add exponents in the numerator so: simplify further: so a is the correct choice. if you don't understand this google exponent rules and it will you understand. look at the image results.

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