Use a sum or difference identity to find the exact value.tan 105°
A. 
B. -2 - 
C. 
D. 2 + 
Answer: B
Mathematics
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Answer the question.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. 19.5 in. C. 14.2 in. D. 71.2 in.
Mathematics
Solve the inequality.?7x + 5? < 13
A. 
B. 
? 
C. 
D. (-?, 7)
Mathematics
Find any x-intercepts.f(x) = x2 + 4x - 7
A. -2 + 
and -2 - 
B. 4
C. -4 and 3
D. none
Mathematics
Find ?y and f '(x) ?x for the given function.y = f(x) = x3, x = 3, and ?x = 0.04
A. 1.094464; 0.36 B. 1.08; 1.08 C. 1.094464; 1.08 D. 1.094464; 1.094464
Mathematics