(Solved):
Find the value of the sum, using the indexed \( x \) - and \( y \)-values. \[ \sum_{k=1}^{4}\left( ...
Find the value of the sum, using the indexed \( x \) - and \( y \)-values. \[ \sum_{k=1}^{4}\left(x_{k}{ }^{*} y_{k}\right) \] Report your answer rounded to two decimal places.