Kayden invested $6, 300 in an account in the year 2006, and the value has been growing exponentially at a constant rate. The value of the account reached $8, 200 in
the year 2010. Determine the value of the account, to the nearest dollar, in the year
2019.

answer: .64

step-by-step explanation

set up the formula for standard deviation for this set of numbers, then simplify

step-by-step explanation:

points a and b are equidistant from the desired line, so the line you find by using them will go through point r.

using points other than a and b will give the desired line only if they are equidistant from r. if they are randomly located, the perpendicular line you create will not necessarily go through point r, hence will not be a solution to the problem.