Set up an integral for the length of the curve.y = 8 cot x, 
? x ? 
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Solve the problem.A tree casts a shadow that is 60 ft long when a 5 ft tall woman casts a shadow of 9 ft. How tall is the tree?
A. 108 ft
B. 45 ft
C. 60 ft
D. 33
ft
Mathematics
Find all solutions of the equation in the interval [0°, 360°).2 cos2 ? - 3 cos ? + 1 = 0
A. {0°, 60°, 300°} B. {0°, 30°, 330°} C. {60°, 90°, 300°} D. {0°, 60°, 120°}
Mathematics
Evaluate the expression.
3
A. 3
B. 
C. 
D. 
Mathematics
An electric company charges $8.00 per month plus 11 cents for each kilowatt hour (kwh) of electricity used. Find a linear function that gives the total cost of n kwh of electricity. ?
A. f (n) = 0.11n B. f (n) = 1.11n + 8.00 C. f (n) = n + 8.00 D. f (n) = 0.11n + 8.00 E. f (n) = 0.085n + 9.00
Mathematics