Solve the problem.A cabin cruiser travels 20 miles in the same time that a power boat travels 40 miles. The cruiser travels 5 mph slower than the power boat. Find the speed of each boat.
A. Power boat travels 15 mph and cruiser travels 10 mph.
B. Power boat travels 20 mph and cruiser travels 15 mph.
C. Power boat travels 10 mph and cruiser travels 5 mph.
D. Cannot be determined with information given.
Answer: C
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Use the graph of the function f(x) to locate the local extrema and identify the intervals where the function is concave up and concave down.
A. Local minimum at x = 1; local maximum at x =-1; concave down on (0, ?); concave up on (-?, 0) B. Local maximum at x = 1; local minimum at x =-1; concave up on (0, ?); concave down on (-?, 0) C. Local minimum at x = 1; local maximum at x =-1; concave up on (0, ?); concave down on (-?, 0) D. Local maximum at x = 1; local minimum at x =-1; concave up on (-?, ?)
For the following decimal measurement, (a) find the closest fractional equivalent using the given denominator, and (b) find the error, to the nearest ten-thousandth if the fraction is used in place of the decimal number.3.150 in. (64ths)
A. (a) 
,
(b) 0.0019
B. (a) 
,
(b) 0.0063
C. (a) 
,
(b) 0.0046
D. (a) 
,
(b) 0.0094
Graph the function on a grapher. Then use the grapher to find the x- and y-intercepts. Round to the nearest hundredth if necessary.f(x) = 0.91x2 - 3.62x + 16.89
A. No x-intercepts, (0, 16.89) B. (6.73, 0), (0, 16.89) C. (16.89, 0), no y-intercepts D. (6.73, 0), (-2.76, 0), (0, 16.89)
Find the quantity if v = 5i - 7j and w = 3i + 2j.
+ 
A. 
+ 
B. 2
+ 
C. 
D. 