Indicate whether the graph of the equation is a parabola, circle, ellipse, or hyperbola.16x2 = 400 + 16y2
A. parabola
B. hyperbola
C. ellipse
D. circle
Answer: B
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Insert grouping symbols so that the expression has the desired value.3 + 2 ? 8 - 2 results in 15
Fill in the blank(s) with the appropriate word(s).
Solve the problem.Find the area of the shaded sector. Round to one decimal place.
A. 184.7 ft2 B. 92.3 ft2 C. 4.0 ft2 D. 0.7 ft2
Solve the problem.A certain noise produces 5.08 × 10-5 Watts/m2 of power. What is the decibel level of this noise? The level of sound intensity in decibels (dB) is 
where ? (beta) is the number of decibels, I is the sound intensity in W/m2, and 
(Round to the nearest decibel.)
A. 8 decibels B. 177 decibels C. 67 decibels D. 77 decibels
For the given functions f and g, find the requested function and state its domain.f(x) = 
; g(x) = 
Find f ? g.
A. (f ? g)(x) = 
; {x|x ? 12}
B. (f ? g)(x) = 
; {x|2 ? x ? 6}
C. (f ? g)(x) = 
; {x|x ? 0}
D. (f ? g)(x) = 
; {x|x ? 2, x ? 6}