Answer: One of the most common real-life problems that can be modeled using a quadratic equation is calculating the maximum height reached by a projectile launched into the air. This problem is relevant in various scenarios, such as determining the height of a basketball shot, a firework launched into the sky, or a ball thrown in a game of catch.The quadratic equation used to model the height of a projectile is h(t) = -16t^2 + vt + h0, where h(t) represents the height of the projectile at time t, v is the initial velocity of the projectile, and h0 is the initial height of the projectile.By solving this quadratic equation, you can find out the maximum height reached by the projectile and the time it takes to reach that height. This information is crucial for understanding the trajectory and behavior of the projectile, which can be beneficial in various fields such as sports, engineering, and physics.By using math to solve real-life problems like determining the maximum height of a projectile, young Filipino mathematicians can improve lives by enhancing their problem-solving skills, critical thinking abilities, and mathematical literacy. This can lead to the development of innovative solutions, improvements in technology and infrastructure, and overall societal progress.