Algebra

1. Graph the function and identify the domain and range. y=-5x^2 oo=infinite
A) Domain: (-oo, oo) Range: [0, oo)
B) Domain: (-oo, oo) Range: (-oo, 0]
C) Domain: (-oo, oo) Range: (-oo, 0]
D) Domain: (-oo, oo) Range: [0, oo)

2. How is the graph of y=-6x^2-4 different from the graph of y=-6x^2?
A)It is shifted 4 units to the left
B)It is shifted 4 units to the right
C)It is shifted 4 units down
D)It is shifted 4 units up

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= -0.8x^2+12x+25.8 where x is 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 of a meter?
A)82.03m
B)6.50m
C)90.00m
D)88.53m

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  1. WHat are your answers?
    We would be happy to check your answers : )

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  2. 3 RE: ANSWERS
    A)25.80 m
    B)37.00 m
    C)17.24 m
    D)16.91 m

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  3. 1. B?
    2. C?
    3. C?

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  4. In #1 aren't b) and c) the same typed in answer??

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  5. #2 is correct :)

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  6. For #3 either use the quadratic formula to find your zeros, or factor it : )

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  7. I need help with these

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