Find the domain of the rational function.f(x) = 
A. all real numbers except ±9
B. all real numbers except ±9, 
C. all real numbers except 9
D. all real numbers except 81
Answer: A
Mathematics
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Find the area of a sector of a circle if the radius of the circle is 12.3 cm and the arc of the sector is 36°. Round the answer to two decimal places.
(a) 54.13 cm² (b) 3.86 cm² (c) 47.53 cm² (d) 7.73 cm²
Mathematics
Express the phrase as a ratio in lowest terms.6 yd to 3 ft
A. 
B. 6
C. 
D. 
Mathematics
Refer to the graph of the function f(x). Provide an appropriate response.Find a value a such that f(a) = 2.
A. -1 B. 0 C. 1 D. 3
Mathematics
Find the open interval(s) where the function is changing as requested.Decreasing; f(x) = - 
A. (3, ?) B. (-?, 3) C. (-3, ?) D. (-?, -3)
Mathematics