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- 1. Multiple ChoiceAn object in launched directly upward at 64 feet per second (ft/s) from a platform 80 feet high. Its height is represented by the equation
s(t) = –16t2 + 64t + 80.
What will be the object's maximum height?2 ft80 ft144 ft64 ft - 2. Multiple Choice
A lizard is jumping across the water in search of food. The equation h = -12t2 + 6t models the lizard's height in feet above the water t seconds after he jumps. How long after jumping is he back on the water?
0.1 seconds
0.25 seconds
0.50 seconds
0.75 seconds
1 second
- 3. 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
- 4. Multiple ChoiceIf 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
When will the object reach its maximum height?4 ft0 seconds0 ft4 seconds - 5. Multiple Choice
A ball is thrown into the air with an upward velocity of 100 ft/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 seconds64 seconds960 seconds2 seconds - 6. Multiple Choice
Madison is 7 less than four times as old as Paige. The product of their ages is 47 more than the sum of their ages. How old are Madison and Paige?
Madison is 5 & Paige is -2
Madison is 13 & Paige is 5
Madison is 5 & Paige is 13
Madison is 1 & Paige is 2
- 7. Multiple Choice
The length of a rectangular garden is 10 yards more than its width. If the area of the garden is 600 square yards, find the length & width of the garden.
The length is 30 & the width is 20
The length is 20 & the width is -30
The length is 60 & the width is 10
The length is 24 & the width is 25
- 8. Multiple ChoiceIf I want to find out when an object hits the ground, I should _________.Use x = (-b/2a) as my answer.Set my equation = 0 and solve.Replace x with 0 and evaluate.Find the y-coordinate of the vertex.
- 9. Multiple ChoiceWhen I want to find the maximum or minimum height of an object, I should_____.Set the equation = 0 and solve.Use x = (-b/2a) as my answer.Substitute x = 0 into the equation.Find the y-coordinate for the vertex.
- 10. Multiple ChoiceIf I want to see the initial height of an object, I should _____________.Substitute x = 0 into the equation and evaluate.Use x = (-b /2a) as my answer.Find the y-coordinate of the vertex.Set my equation = 0 and solve.
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