Julissa's dance class ended at 6:15 pm. It lasted 1 hour and 25 minutes.
What time did it start?

The answer would be d i think but i’m for sure it is not a and 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.

Is it multiple choice