math unit test 24 questions thankms

math unit test 24 questions thankms

1. 

Graph the function and identify the domain and range.

y equals negative 3x squared

 (1 point)

2. 

How is the graph of y equals negative 6x squared plus 4. different from the graph of y equals negative 6x squared.?

 (1 point)

3. 

A model rocket is launched from a roof into a large field. The path of the rocket can be modeled by the equation y equals negative 0.06x squared plus 9.6x plus 5.4 where x is the horizontal distance, in meters, from the starting point on the roof and y is the height, in meters, of the rocket above the ground. 

How far horizontally from its starting point will the rocket land? Round your answer to the nearest hundredth.

 (1 point)

4. 

Landon is standing in a hole that is 6.5 m deep. He throws a rock, and it goes up into the air, out of the hole, and then lands on the ground above. The path of the rock can be modeled by the equation y equals negative 0.05x squared plus 4.5x minus 6.5, where x is the horizontal distance of the rock, in meters, from Landon and y is the height, in meters, of the rock above the ground. How far horizontally from Landon will the rock land? Round your answer to the nearest hundredth of a meter.

 (1 point)

5. 

How many real number solutions does the equation have?

0 equals negative 4x squared plus 7x minus 8

 (1 point)

6. 

How many real-number solutions does the equation have?

0 equals 2x squared minus 20x plus 50

 (1 point)

7. 

Graph the set of points. Which model is most appropriate for the set? 

(negative 6, 0), (negative 4, 2), (negative 3, 3), (2, 8)

 (1 point)

8. 

What type of equation will best fit the data below?

a coordinate plane with points plotted that form an upside-down U shape.

 (1 point)

9. 

Find the solutions to the system.

y equals x squared plus 5x plus 6

y equals 4x plus 12

 (1 point)

10. 

Find the solutions to the system.

y equals x squared plus 8x plus 2

y equals 7x plus 4

 (1 point)

11. 

If an object is dropped from a height of 200 feet, the function h of t equals negative 16t squared plus 200  gives the height of the object after t seconds. Approximately, when will the object hit the ground?

 (1 point)

12. 

A ball is thrown into the air with an upward velocity of 20 feet per second. Its height, h, in feet after t seconds is given by the function h of t equals negative 16t squared plus 20t plus 2 . How long does it take the ball to reach its maximum height? What is the ball’s maximum height? Round to the nearest hundredth, if necessary.

 (1 point)

13. 

A catapult launches a boulder with an upward velocity of 184 feet per second. The height of the boulder, (h), in feet after t seconds is given by the function  h of t equals negative 16t squared plus 184t plus 20 . How long does it take the boulder to reach its maximum height? What is the boulder’s maximum height? Round to the nearest hundredth, if necessary.

 (1 point)

14. 

Use the graph of (x) to find the solutions to the equation (x) = 0.

A coordinate plane with parabola opening up. The y-intercept is negative 12 and the x-intercepts are 2 and negative 6.

 (1 point)

15. 

What are the solutions of the equation 2x squared equals 8? Use a graph of a related function whose roots answer the question.

 (1 point)

16. 

Solve the equation using the Zero Product Property.

The quantity 3x plus 1 times the quantity x minus 5 equals 0.

 (1 point)

17. 

What are the solutions of the equation?

z squared minus 6z minus 27 equals 0.

 (1 point)

18. 

A community group is planning the expansion of a square flower garden in a city park. If each side of the original garden is increased by 3 meters, the new total area of the garden will be 225 square meters. Find the length of each side of the original garden.

 (1 point)

19. 

What is the value of c so that y equals x squared plus 15x plus cis a perfect square trinomial?

 (1 point)

20. 

Solve the equation by completing the square. Round to the nearest tenth.

x squared plus 8x equals 10

 (1 point)

21. 

Solve the equation by completing the square.

x squared minus 6x plus 7 equals 0

 (1 point)

22. 

Use the quadratic formula to solve the equation. If necessary, round to the nearest hundredth.

x squared plus 3 equals negative 4x

 (1 point)

23. 

Which kind of function best models the data in the table? Use differences or ratios.

x
-3   11.5
 -2  7
 -1  3.5
 0  1
 1  -.5
 2  -1

 (1 point)

24. 

Solve the system of equations algebraically. Show all of your steps. 

y equals x squared plus two x;  y equals three x plus twenty

 
(2 points)

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