Find the vertex, focus, directrix, and focal width of the parabola.x = 8y2
A. Vertex: (0, 0); Focus: 
; Directrix: x = - 
; Focal width: 0.13
B. Vertex: (0, 0); Focus: 
; Directrix: x = 
; Focal width: 32
C. Vertex: (0, 0); Focus: 
; Directrix: x = - 
; Focal width: 0.13
D. Vertex: (0, 0); Focus: 
; Directrix: y = - 
; Focal width: 32
Answer: C
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Solve the problem.Find the moment of inertia about the x-axis of a thin plane of constant density 
bounded by the coordinate axes and the line 
.
A. 252
B. 294
C. 
D. 343
Tell whether the statement is true or false. If false, give the reason.{3, 15, 28, 11, 37} = {37, 15, 11, 82, 3}
A. False; the elements must have the same sum. B. True C. False; the elements are not in the same order. D. False; the elements are not the same.
A heavy rope, 40ft long, weighs 0.7lb/ft and hangs over the edge of a building 110 ft high. How much work is done in pulling the rope to the top of the building?
a. 670 ft-lb b. 650 ft-lb c. 560 ft-lb d. 630 ft-lb e. 660 ft-lb
Find an equation of the secant line containing (1, f(1)) and (2, f(2)).f(x) = 
A. y = 
x + 
B. y = 
x + 
C. y = 
x + 
D. y = - 
x + 