Determine the Quadratic Function Whose Graph Is Given

question 40

Multiple Choice

Determine the quadratic function whose graph is given.
-A flare fired from the bottom of a gorge is visible only when the flare is above the rim. If it is fired with an initial velocity of 112 ft/sec, and the gorge is 160 ft deep, during what interval can the flare be seen?
(h = -16t² + vot + ho.)

• A) 6 < t < 9
• B) 0 < t < 2
• C) 2 < t < 5
• D) 4 < t < 7