Find the domain of the function.f(x) = ln (3x - x2)
A. -3 ? x < 0
B. -3 < x < 3
C. x ? 3
D. 0 < x < 3
Answer: D
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Write a chain rule formula for the following derivative.
for w = f(x, y, z); x = g(r, s), y = h(t), z = k(r, s, t)
A. 
= 
+ 
B. 
= 
+ 
C. 
= 
+ 
D. 
= 
Find the expected value.A fair coin is tossed three times, and a player wins $3 if 3 tails occur, wins $2 if 2 tails occur and loses $3 if no tails occur. If one tail occurs, no one wins. What is the expected value of the games?
A. $0.75 B. $2.00 C. -$3.00 D. $3.00
Solve the problem.Use the formula Zt = 
to find the total impedance in a parallel circuit for 
and 
A. 1.7(cos 140.9° + i sin 140.9°) B. 1.7(cos 69.1° + i sin 69.1°) C. 1.7(cos 64.9° + i sin 64.9°) D. 1.7(cos 134.7° + i sin 134.7°)
Convert. Round to the nearest tenth unless otherwise indicated.The width of the garden was 6.5 yards. Convert this length to meters.
A. 49.5 m B. 165.1 m C. 255.9 m D. 5.9 m