Questão 2

The height $h(t)$ in feet of a projectile launched into the air after $t$ seconds is modeled by the function $h(t) = -16t^2 + 64t + 80$. What is the maximum height, in feet, reached by the projectile?

1. 80 feet
2. 128 feet
3. 144 feet
4. 160 feet