Describe how the confidence limit $($uncertainty$)$ of a measurement can be assessed and reported. Then write down an equation that describes how the measurement uncertainties of three measurements, $p,q,$ and $r,$ propagate into the uncertainty of $x,$ where $,r)$ and the standard deviations of $p,q,$ and $r,$ are expressed as $s_p,s_q,$ and $s_r.$ If $x=p*\frac{q}{r},$ what would the equation be$?(15\%)$