## Algebra and Trigonometry 10th Edition

Mathematical model: $y=3.786x$ If $x=5~gallons$ $y=18.93~liters$ If $x=25~gallons$ $y=95.65~liters$
$y=kx$ When $y=53~liters$, $x=14~gallons$: $53=k(14)$ $k=\frac{53}{14}\approx3.786$ Then: $y=3.786x$ If $x=5~gallons$ $y=3.786\times5=18.93~liters$ If $x=25~gallons$ $y=3.786\times25=95.65~liters$