Miguel wants to bike a total of 100 miles over the course of one week in the summer. He logs how much he bikes each day in the table below. Miguel’s Biking Log Day Miles Completed Monday 16.3 Tuesday Wednesday 18.75 Thursday Friday How many total miles does Miguel need to ride on Saturday and Sunday to meet his goal? 15 3/5miles 45 1/5miles 62 1/2miles 84 2/5miles

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The answer is option c.

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.