Help me I have a Timer Still

6.51 x 10^9
Blue box: 6.51
Orange box: 9

Ithink it’s b, hope this .

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.