Mathematics, 22.10.2020 16:01, PlaneGamer5678

The opening of a tunnel that travels through a mountainside can be modeled by $y = - \frac {2}{15} (x - 15)(x + 15)$ , where x and y are measured in feet. The x-axis represents the ground. a. Find the width of the tunnel at ground level.
b. How tall is the tunnel?

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The opening of a tunnel that travels through a mountainside can be modeled by , where x and y are me...