This table represents the proportional relationship between the number of boxes and the number of magnetic cubes held by the boxes.

Cubes
Boxes
Number of cubes
1
n
5
625
8
1,000

What is the unknown value representing the unit rate?
8
125
140
156

A

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.