Multiply.
× 
A. 
B. 
C. 
D. 
Answer: C
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Solve the problem.To measure the width of a river, a surveyor starts at point A on one bank and walks 72 feet down the river to point B. He then measures the angle ABC to be 
Estimate the width of the river to the nearest foot. See the figure below. 
A. 66 ft B. 173 ft C. 30 ft D. 28 ft
Find any values of the variable that make the expression undefined.
A. 0 B. 2 C. -2 D. None
Write the standard form of the equation of the circle described.Center (0, 0), r = 
A. x2 + y2 = 121
B. x2 + y2 = 
C. x2 + y2 = 
D. x2 + y2 = 11
Find the domain of the function.
?
?
A. Non-negative real numbers x except x = 4 B. All real numbers x except x = 0 C. Non-negative real numbers x D. All real numbers x E. All real numbers x such that x> 0