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- 1. Multiple Choice
An object in launched directly upward. Its height is represented by the equation
s(t) = –16t2 + 64t + 80.
What will be the object's maximum height?
2 ft
80 ft
144 ft
64 ft
- 2. Multiple ChoiceAt what time would you reach 16 ft above the water if you jump of a cliff using the formula:
h = -16t2 + 8t + 24?811/21/4 - 3. Multiple Choice
In order to find the vertex of an in standard form, the first two steps are to use the equation _____ to find the x value, and then you can plug that value back into the equation to find the _____.
-b/2a, y-value
(x-h)^2, y-intercept
b2-4ac, solution
ax^2, vertex
- 4. Multiple Choice
A diver is standing on a platform above the pool. He jumps form the platform and his path follows the equation
h(t) = −16 t2 + 8t + 24
How high is the platform?
.25 ft
24 ft
1.5 ft
8 ft
- 5. Multiple Choice
The 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?
2 meters
5 meters
40 meters
20 meters
- 6. Multiple Choice
Your nephew is standing on his deck. He tosses his toy up into the air. The equation
h = -2t2 + 7t + 4
models the toy's height, h, from the ground at t seconds after he threw it. How high is the toy after 1 second?
2
4
9
10
15
- 7. Multiple Choice
A tennis ball is fired from the roof of a 100-foot building. The equation
h = -16t2 +84t + 100
models the height, h, of the ball at any given time, t. When does the ball hit the ground?
2.625
6.25
100
200
210.25
- 8. Multiple ChoiceUse the quadratic formula to find the solutions for
y = -x2 - 5x + 12-4.9 and -0.1-8.54 and 8.54-0.45 and 3.55-6.77 and 1.77 - 9. Multiple ChoiceIf the discriminant is zero you will haveno real solutionstwo real solutions1 real solution1 imaginary solution
- 10. Multiple Choice
How many roots does the following equation have?
y = x2 + 7x + 13
One
Two
None
- Answer choicesTagsAnswer choicesTags