Find the indicated set given A = {-3, 0, 2, 5, 6, 11, 16, 23}, B = {-3, 0, 16, 23}, and 
B ? C
A. {11, 16, 23}
B. {16, 23}
C. {-7, -4, -3, 0, 11, 16, 23}
D. {-4, 16, 23}
Answer: B
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Solve the problem.A surveyor is measuring the distance across a small lake. He has set up his transit on one side of the lake 80 feet from a piling that is directly across from a pier on the other side of the lake. From his transit, the angle between the piling and the pier is 30°. What is the distance between the piling and the pier to the nearest foot?
A. 139 feet B. 69 feet C. 46 feet D. 40 feet
Simplify the polynomial by adding or subtracting, as indicated. Express your answer as a single polynomial in standard form.Find the sum of (6x5 - 4x3 + 9x) and (2x5 + 8x3 - 7x).
A. 8x5 + 4x3 + 2x B. 14x9 C. 8x + 4x5 + 2x3 D. 11x5 + 14x3 - 11x
Two sides of a right triangle ABC (C is the right angle) are given. Find the indicated trigonometric function of the given angle. Give exact answers with rational denominators.Find csc B when a = 9 and b = 5.
A. 
B. 
C. 
D. 
Compute the product.
A. 
B. 
C. 
D. not defined