Use a graphing calculator to solve the given equations to the nearest 0.01.3x3 + x2 - 15x - 5 = 0
A. -0.33, 2.24, -2.24
B. 0.33, 2.24, -2.24
C. 3, 2.14, -2.14
D. -3, 2.34, -2.34
Answer: A
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Approximate f(x) to four decimal places.f(x) = -3.4e-2.9x, x = 1.6
A. -0.0328 B. 0.0328 C. -352.0508 D. 352.0508
Solve.An engineer designing a tunnel specifies a length of 88 m. The actual construction requires the tunnel to be 220 cm longer. What is the final length of the tunnel, in meters?
A. 2288 m B. 90.2 m C. 88.22 m D. 110 m
Discuss the equation and graph it.r = 
A. ellipse, directrix perpendicular to
the polar axis 
unit left of the pole
vertices (
, 0), (
, ?)
B. hyperbola, directrix perpendicular to
the polar axis 
unit right of the pole
vertices (
, 0), (- 
, ?)
C. ellipse, directrix parallel to
the polar axis 
unit below the pole
vertices (
, 
), (
, 
)
D. hyperbola; directrix parallel to
the polar axis 
unit above the pole
vertices (
, 
), (- 
, 
)
Find the unknown length x for the given similar triangles. 
A. x = 32 B. x = 24 C. x = 40 D. x = 30