Find the intervals on which the function is increasing and the intervals on which the function is decreasing.f(x) = 
x2 - 8x - 
A. Increasing on (-4, ?) , decreasing on (-?, -4)
B. Increasing on 
; decreasing on 
C. Increasing on 
; decreasing on 
D. Increasing on (8, ?) , decreasing on (-?, 8)
Answer: D
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Decide whether the figure is convex or concave.
A. Convex B. Concave
Use the given information given to find the exact value of the trigonometric function.sec ? = 4,
? lies in quadrant I
Find cos 
.
A. 
B. 
C. 
D. 
Find the amount paid by each of the multiple carriers.The Robinson Company had an insured fire loss of $948,000. It had insurance coverage as follows: Company A, $725,000; Company B, $500,000; and Company C, $200,000. Find the amount paid by each carrier assuming that the coinsurance requirement had been met.
A. $479,543.86, $327,087.72, $141,368.42 B. $485,087.72, $346,491.23, $116,421.05 C. $487,859.65, $338,175.44, $121,964.91 D. $482,315.79, $332,631.58, $133,052.63
Determine whether the graph of f opens upward or downward and whether the graph is wider, narrower, or the same as the graph of 
Find the axis of symmetry and the vertex. Find the y-intercept and any x-intercepts. Sketch a graph of f.f(x) = 3x - x2
What will be an ideal response?