Use the calibration curve you chose in the question to determine the concentration of a $Cu(N{O}_3{)}_2$ solution that is measured to have an absorbance of $1\mathrm{.}41.(3$ sig figs$)$ 'Hint: for best accuracy, use the equation indicated on the graph, replacing $x$ and $y$ with the properties shown on those axis! Recall that $y=mx+b$ but substitute the $m($slope$)$ and $b(y$ intercept$)$ values given on the graph $\text{'}$