May's class is testing their egg protection contraptions by dropping them off the roof of their school. Use GeoGebra to graph the situation using the formula y =- 16t^2 + 40. Which of the following correctly interprets the height of the school's roof?
• 15 feet
• 20 feet
• 40 feet
• 41 feet
The formula y = -16t^2 + 40 represents the height of the egg above the ground at time t. In this case, the coefficient of t^2 is -16, which means that the egg is dropped from a height of 40 feet.
Therefore, the correct interpretation of the height of the school's roof is that it is 40 feet high.