Use the table of record trout lengths at Yosemite Lake to answer the question. To find the average, add up the values you are interested in and then divide the sum by the number of values. Round your answer to the nearest tenth. 
Find the average length of record trout caught during a weekday.
A. 13.9 in.
B. 71.6 in.
C. 19.4 in.
D. 14.3 in.
Answer: D
Mathematics
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Solve the differential equation subject to the given condition. Note that y(a) denotes the value of y at t = a. 
= - 2.5y, y(0) = 4826
A. y = 4826t-2.5 B. y = e-2.5t + 4826 C. y = -4826e2.5t D. y = 4826e-2.5t
Mathematics
Find the limit.
9 cos 
A. 1 B. - 9 C. 9 D. 0
Mathematics
A set of data items is normally distributed with a mean of 60. Determine the z-score for the data point given, if the standard deviation is as given.data item: 60; standard deviation: 9
A. 1
B. 9
C. 
D. 0
Mathematics
Determine whether the lines through each pair of points are perpendicular.(-1, 3) and (9, 17); (7, 10) and (14, 15)
A. perpendicular B. not perpendicular
Mathematics