Perform the indicated operations and simplify the result. Leave the answer in factored form.
- 
A. 0
B. 6x
C. 9
D. 81
Answer: C
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Write a chain rule formula for the following derivative.
for w = f(x, y, z); x = g(r, s, t), y = h(r, s, t), z = k(r, s, t)
A. 
= 
+ 
+ 
B. 
= 
+ 
+ 
C. 
= 
+ 
+ 
D. 
= 
+ 
Solve. Provide answers in interval notation.(c + 8)(c - 1)(c - 5) > 0
A. (5, ?) B. (-?, -8) ? (1, 5) C. (-8, 1) ? (5, ?) D. (-?, 1)
Identify the conic that the polar equation represents. Also, give the position of the directrix.r = 
A. ellipse, directrix is perpendicular to the polar axis at a distance 3 units to the left of the pole
B. hyperbola, directrix is perpendicular to the polar axis at a distance 
units to the left of the pole
C. hyperbola, directrix is perpendicular to the polar axis at a distance 3 units to the right of the pole
D. ellipse, directrix is perpendicular to the polar axis at a distance 
units to the right of the pole
Solve.Three out of 10 adults in a certain city buy their drugs at large drug stores. If this city has 138,000 adults, how many of these adults would you expect to buy their drugs at large drug stores?
A. 4140 adults B. 4600 adults C. 46,000 adults D. 41,400 adults