Factor the trinomial completely. If the trinomial cannot be factored, say it is prime.x2 - x - 63
A. prime
B. (x + 7)(x - 9)
C. (x - 63)(x + 1)
D. (x - 7)(x + 9)
Answer: A
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Find the flux of the vector field F across the surface S in the indicated direction.F = 
k ; S is the upper hemisphere of x2 + y2 + z2 = 25; direction is away from the origin
A. - 
?
B. 
?
C. - 
D. 
Perform the indicated operation.
A. 5 hr 48 min 22 sec B. 6 hr 49 min 22 sec C. 6 hr 48 min 22 sec D. 5 hr 49 min 22 sec
Find the vertex, focus, and directrix of the parabola. Graph the equation.(x + 3)2 = -(y + 2)
A. vertex: (-3, -2)
focus: (-3, -2.25)
directrix: y = -1.75
B. vertex: (-3, -2)
focus: (-3.25, -2)
directrix: x = -2.75
C. vertex: (3, 2)
focus: (3, 1.75)
directrix: y = 2.25
D. vertex: (3, 2)
focus: (2.75, 2)
directrix: x = 3.25
Use a calculator to find the following to four decimal places.
A. 3.7589 B. 1.5667 C. 1.7108 D. 3.7825