Asked by Anonymous
                back from break, need help again
The height , h, in feet, of a bottle rocket is modeled by:
where t is the time in seconds.
A. Factor the expression.
H = -16t^2 + 60t = 4t(-4t + 15)
B. What is the height of the rocket after 2 seconds?
When t = 2
H = 4t(-4 times 2 + 15) = 28
C. What is the height of the rocket after 3.75 seconds? Explain the solution.
When t = 3.75
H = 4t(-4 times 3.75 + 15) = 0?
(when I try to calculate this I get 0 and that can't be right, I'm doing something completely wrong I think)
            
            
        The height , h, in feet, of a bottle rocket is modeled by:
where t is the time in seconds.
A. Factor the expression.
H = -16t^2 + 60t = 4t(-4t + 15)
B. What is the height of the rocket after 2 seconds?
When t = 2
H = 4t(-4 times 2 + 15) = 28
C. What is the height of the rocket after 3.75 seconds? Explain the solution.
When t = 3.75
H = 4t(-4 times 3.75 + 15) = 0?
(when I try to calculate this I get 0 and that can't be right, I'm doing something completely wrong I think)
Answers
                    Answered by
            Anonymous
            
    Forgot to post the Modeled by part: h = -16t^2 + 60t
    
                    Answered by
            Scott
            
    B.  calculation error
C. zero is correct
... the rocket has to come back down at some point
    
C. zero is correct
... the rocket has to come back down at some point
                    Answered by
            Anonymous
            
    What was the error in my calculation on B?
    
                    Answered by
            Scott
            
    it's fairly obvious ... troubleshoot it ...
    
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