## Basic College Mathematics (10th Edition)

Regular Sandwich is the best buy at $\frac{0.86 Dollar}{inches}$.
To find the rates we need to find Dollar per ounce. So. Writing all options as a ratio. Small = $\frac{5.99 Dollar}{5 inches}$ Regular = $\frac{6.89 Dollar}{8 inches}$ Large = $\frac{10 Dollar}{11 inches}$ Now, we need to find the lowest terms. Small = $\frac{5.99 Dollar}{5 inches} \approx \frac{1.20 Dollar}{inches}$ Regular = $\frac{6.89 Dollar}{8 inches} \approx \frac{0.86 Dollar}{inches}$ Large = $\frac{10 Dollar}{11 inches} \approx \frac{0.91 Dollar}{inches}$ Now comparing all the rates Regular Sandwich is the best buy at $\frac{0.86 Dollar}{inches}$.