(A)
(B)
(C)
(D)
(E)(A)
(B)
(C)
(D)
(E)(A)
(B)
(C)
(D)
(E)Estimate the acceleration (in ft/sec^2 ) at t = 6 sec.−6
−1.8
−1.5
1.5
6Use the graph shown, sketched on [0, 7], for Questions 54–56.
From the graph it follows that
f is discontinuous at x = 4
f is decreasing for 4 < x < 7
f is constant for 0 < x < 4
f (5) < f (0)
f (2) < f (3)
Which statement best describes f at x = 5?
f has a root.
f has a maximum.
f has a minimum.
The graph of f has a point of inflection.
f is discontinuous.
For which interval is the graph of f concave downward?