A rock is thrown upward at a speed of 85 ft/sec from the top of a 100-foot-high cliff overlooking the ocean. The rock's height above the ocean can be modeled by the function f(x)=−16x2+85x+100
where f(x) represents the height of the rock as a function of time, x.
Match each question below with the characteristic of the function that is necessary to answer it.
(3 points)
Put responses in the correct input to answer the question. Select a response, navigate to the desired input and insert the response. Responses can be selected and inserted using the space bar, enter key, left mouse button or touchpad. Responses can also be moved by dragging with a mouse.
After how many seconds does the rock reach its maximum height?
After how many seconds would the rock hit the ocean?
What is the maximum height of the rock?
answers:
the x-value of the maximum
the y-value of the maximum
the x-intercept
After how many seconds does the rock reach its maximum height? - the x-value of the maximum
After how many seconds would the rock hit the ocean? - the x-intercept
What is the maximum height of the rock? - the y-value of the maximum
After how many seconds does the rock reach its maximum height? - the x-value of the maximum
After how many seconds would the rock hit the ocean? - the x-intercept
What is the maximum height of the rock? - the y-value of the maximum
After how many seconds does the rock reach its maximum height? - the x-value of the maximum
After how many seconds would the rock hit the ocean? - the x-intercept
What is the maximum height of the rock? - the y-value of the maximum