Short Quiz in Math 9 solves problems involving quadratic functions
Quiz by Quizalize Premium (Philippines)
Grade 9
Mathematics
Philippines Curriculum: Grades 1-10
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5 questions
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- Q1The height of a water balloon that is launched into the air is given by h(t) = -5(t +1)(t - 5). When will the balloon explode on the ground?1 second3 seconds2 seconds5 seconds30sM9AL-Ii-j-2
- Q2The height of a water balloon that is launched into the air is given by h(t) = -5t2 + 40t + 2. From what height was the balloon released?40 meters20 meters5 meters2 meters30sM9AL-Ii-j-2
- Q3If a toy rocket is launched vertically upward from ground level with an initial velocity of 128 feet per second, then its height h after t seconds is given by the equation h(t) = -16t2 +128t When will the object reach its maximum height?4 ft4 seconds0 ft0 seconds30sM9AL-Ii-j-2
- Q4The profit from selling local ballet tickets depends on the ticket price. Using past receipts, we find that the profit can be modeled by the function p= -15x2 +600x +60 , where x is the price of each ticket. What is the maximum profit you can make from selling tickets?$6060$20$10,250$60030sM9AL-Ii-j-2
- Q5Rafael drops a ball from a third-story window. This equation represents the approximate height, h, in meters, of the ball above the ground after it falls for t seconds. h = -5t2 + 45 When is the ball at ground level?only at t = 0 secondsonly at t = 3 secondsat both t = 0 seconds and t = 3 secondsonly at t = 9 seconds30sM9AL-Ii-j-2