## Algebra and Trigonometry 10th Edition

$16~ft$
Find the $y$ of the vertex, that is: $f(-\frac{b}{2a})=f(-\frac{\frac{24}{9}}{2(-\frac{4}{9})})=f(3)$ $f(3)=-\frac{4}{9}(3)^2+\frac{24}{9}(3)+12=-4+8+12=16$