A ball is thrown into the air with an upward velocity of 80 ft/s. Its height, h, in feet after t seconds is given by the function h = -16t2 + 80t + 96. How many seconds did it take for the ball to reach its maximum height?
96 sec
80 sec
196 sec
2.5 sec
3. Multiple Choice
15 minutes
1 pt
A ball is thrown into the air with an upward velocity of 80 ft/s. Its height, h, in feet after t seconds is given by the function h = -16t2 + 80t + 96. What is the maximum height of the ball?
96 sec
80 sec
196 sec
2.5 sec
4. Multiple Choice
15 minutes
1 pt
A ball is thrown into the air with an upward velocity of 80 ft/s. Its height, h, in feet after t seconds is given by the function h = -16t2 + 80t + 96. When will the ball hit the ground?
96 sec
5 sec
6 sec
2.5 sec
5. Multiple Choice
15 minutes
1 pt
The observed bunny rabbit population on an island is given by the function, P(t) = -30t2 + 1200t + 10000 where t is the time in months since they began observing the rabbits. What is the maximum population of bunnies?
20 bunnies
10000 bunnies
1200 bunnies
22000 bunnies
6. Multiple Choice
15 minutes
1 pt
The observed bunny rabbit population on an island is given by the function, P(t) = -30t2 + 1200t + 10000 where t is the time in months since they began observing the rabbits. After how many months does the bunny rabbit population reach 19000?
10 and 30 months
15 and 20 months
20 months
10 months
7. Multiple Choice
15 minutes
1 pt
If the measure of one side of a square is increased by 3 centimeters and the adjacent side is decreased by 3 centimeters, the area of the resulting rectangle is 27 square centimeters. Find the perimeter of the rectangle.
6 cm
24 cm
3 cm
12 cm
8. Multiple Choice
15 minutes
1 pt
The height of an object thrown into the air is given by the formula h(t) = -4.9t2 + 25t, where h(t) is in meters and t is in seconds. What is the height of the object after 4 seconds?
2.55 meters
21.6 meters
31 meters
25 meters
9. Multiple Choice
15 minutes
1 pt
A rocket is launched into the air from a cliff that is 52 feet above the ocean. Its flight can be modeled by the equation h = -16t2 + 204t + 52. When will the rocket hit the water?