The scatter plot presents rays monthly electricity bills and the amount of time ray spent at home from january through august. the correlation coefficient (r) is the correlation coefficient can be improved by ignoring the bill for the month of

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.