MEDAL

A sandbag was thrown downward from a building. The function f(t) = -16t2 - 64t + 80 shows the height f(t), in feet, of the sandbag after t seconds:

Part A: Factor the function f(t) and use the factors to interpret the meaning of the x-intercept of the function. (4 points)

Part B: Complete the square of the expression for f(x) to determine the vertex of the graph of f(x). Would this be a maximum or minimum on the graph? (4 points)

Part C: Use your answer in part B to determine the axis of symmetry for f(x)? (2 points)

Question

MEDAL 

A sandbag was thrown downward from a building. The function f(t) = -16t2 - 64t + 80 shows the height f(t), in feet, of the sandbag after t seconds:

Part A: Factor the function f(t) and use the factors to interpret the meaning of the x-intercept of the function. (4 points)

Part B: Complete the square of the expression for f(x) to determine the vertex of the graph of f(x). Would this be a maximum or minimum on the graph? (4 points)

Part C: Use your answer in part B to determine the axis of symmetry for f(x)? (2 points)

sedatefrog712 · Answer

@ganeshie8

anonymous · Answer

-16t^2+-64+80
A.) Factor 
      -16(T^2+4x-5)
       -16(T+5)(T-1)
          x= (-8,1)
B.) -16(T^2+4x+4)+64+40
      -16(T+2)^2+104
       Vertex=(-2,104)
C.) X=-b/2a
     -(-64)/2(-16) 
       Symmetry x=-2

anonymous · Answer

Sorry for the time, but let me know if you need any more clarification

sedatefrog712 · Answer

@n648c788 thank you but i have a coupple more questions for part a and b

anonymous · Answer

Hey sorry I did not see you messages, I am still new to the site