Quadratics in Real World

What are the zeroes of this graph?

• x = -4 and 2

• x= -1 and 0

• x = 9 and -8

• x= 4 and -2

What is the equation of this parabola in it’s factored form?

• y=(x-2)(x+3)

• y=(x+2)(x-3)

• y=(x+2)(x-3)(x-6)

• y=(x+3)(x-6)

Jason jumped off of a cliff into the ocean in Acapulco while vacationing with some friends. His height as a function of time could be modeled by the function h(t) = –16t² + 16t + 480, where t is the time in seconds and h is the height in feet. How long does it take Jason to hit the water?

• -16 seconds

• -6 seconds

• 0 seconds

• 5 seconds

If 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. How long does it take the rocket to hit the ground?

• 8 seconds

• 16 seconds

• -16 seconds

• -8 seconds

• 36 feet

• 1.12 seconds

• 10.06 feet

• 5.61 seconds

• 10.06 ft

• 1.12 seconds

• 5.61 seconds

• 5.125 seconds

• 5.61 seconds

• 1.12 seconds

• 5.125 seconds

• 11 feet

• 201 feet

• 10.06 feet

• 36 feet

• 81 feet

• 201 feet

• 10.06 feet

• 36 feet

• 81 feet

• 39 feet

• 11 feet

• 6.5 feet

• 10.06 feet