6. A scale for a map says that i mm is equal to 10.2 miles. Mark
measures the distance between
two cities as 6 mm. How far
apart are the cities?

Multiplication property of zero

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.

X=14 hope it !