Determine the domain of the function.f(x) = 
A. {x? x ? -8, x ? -4, x ? 0}
B. {x? x ? -8, x ? -4}
C. {x? x ? 8, x ? 4}
D. {x? x ? 0, x ? 8, x ? 4}
Answer: C
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Find the center, foci, and vertices of the ellipse.16x2 + 25y2 = 400
A. center at (0, 0) foci at (0, -4) and (0, 4) vertices at (0, -16), (0, 16) B. center at (0, 0) foci at (-5, 0) and (5, 0) vertices at (-25, 0), (25, 0) C. center at (0, 0) foci at (- 3, 0) and (3, 0) vertices at (-5, 0), (5, 0) D. center at (0, 0) foci at (0, - 3) and (0, 3) vertices at (0, -5), (0, 5)
Provide an appropriate response.Explain how the expressions (-2)6 and -26 are different.
What will be an ideal response?
Solve the problem.From a distance of 47 feet from the base of a building, the angle of elevation to the top of the building is 60°. Estimate the height of the building to the nearest foot.
A. 24 ft B. 81 ft C. 27 ft D. 41 ft
Solve the problem.A ball is thrown vertically upward from the top of a building 96 feet tall with an initial velocity of 80 feet per second. The height, s (in feet), of the ball after t seconds is given by 
After how many seconds does the ball strike the ground?
A. 8 sec B. 97 sec C. 6 sec D. 5 sec