Online learning 2 3L/Q18 Quadratic Models

Online learning 2 3L/Q18 Quadratic Models

watch the next slide and copy the two examples into your bound refence

Multiple Choice

The 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

• $600

• $10,250

Multiple Choice

A ball is thrown into the air with an upward velocity of 100 m/s. Its height, h, after t seconds is given by the function

h = -16t² + 64t + 960.

How many seconds did it take for the ball to reach its maximum height?

• 10 seconds

• 64 seconds

• 960 seconds

• 2 seconds

Multiple Choice

The function f(t) = -5t²+20t + 60 models the approximate height of an object t seconds after it is launched. How many seconds does it take the object to hit the ground?

• 4 seconds

• -2 seconds

• 6 seconds

• 9 seconds

Multiple Choice

A frog is sitting on the ground when he is scared by a big dog. His movement is modeled by the equation h = -6t² + 6t where h is the frog's height at any given time, t . How many seconds until the frog is back on the ground?

• 0.5 seconds

• 1 second

• 1.5 seconds

• 2 seconds

• 3 seconds

Multiple Choice

Rafael drops a ball from a third-story window. This equation  $h\left(t\right)=-5t^2+45$   represents the approximate height, h, in meters, of the ball above the ground after it falls for t seconds.  You need to know the initial height of the ball -- what part of the parabola do you need to find?

• y-intercept

• x-coordinate of the vertex

• y-coordinate of the vertex

• x-intercept

Multiple Choice

A frog is sitting on the ground when he is scared by a big dog. His movement is modeled by the equation  $h(t)=-6t^2+6t$   where h is the frog's height at any given time, t. You want to know the time the frog is back on the ground -- what do you need to find on the parabola?

• y-intercept

• x-coordinate of the vertex

• y-coordinate of the vertex

• x-intercept

Complete 3L

• 1, 3,6,7,8, 10, 9*, 

• Complete CHAPTER 3 REVIEW all questions