Multiply and simplify any radicals in your answer. Assume that all variables represent positive real numbers.2
(
+ 
)
A. 2
+ 10
B. 10
+ 10
C. 2
+ 5
D. 2
+ 5
Answer: A
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Find the derivative.y = 9x2e-x
A. 9xe-x(x + 2) B. 18xe-x(1 - x) C. 9xex(2 - x) D. 9xe-x(2 - x)
Refer to the weighted voting system 
and the Banzhaf definition of power. (The five players will be called P1, P2, P3, P4, and P5.)In this weighted voting system,
A. P3 has four times as much power as P5. B. P3 has twice as much power as P4. C. P3 and P4 have the same power. D. P3 has three times as much power as P4. E. none of these
Convert the units using unit fractions.20 yd = 
ft
A. 240 B. 720 C. 60 D. 180
Form a valid conclusion, using all the statements for each argument. Give reasons. ? If we win third prize, we will go to the Europe. If we are ingenious, we will win third prize. We are ingenious.
A. We won't win third prize. (direct ) B. We won't go to Europe. (indirect) C. We will go to Europe. (transitive and direct ) D. We will go to Europe. (indirect ) E. none of these