A school ends the year with 651 students. This is a 5% increase from the start of the school year. Use the drop-down menus to build an equation that could be used to find the number of students, n, that were at the school at the start of the school year.

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.

Yea they are simplyfiy the ratios