There are 25 students on the school bus, 5 girls and 20 boys. What is the ratio
of girls to boys on the school bus?
A. 1:4
B. 5:2
c. 4:1

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.