Solve the problem.A dart is thrown at a number line in such a way that it always lands in the interval 
Let x be the number the dart hits. Suppose the probability density function for x is given byf(x) = 
x2, for 0 ? x ? 7.
Find P(2 ? x ? 5), the probability that it lands in [2, 5].
A. 0.03
B. 0.34
C. 0.43
D. 0.06
Answer: B
Mathematics
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Perform the indicated operation.
+ 
A. 
B. 
C. - 
D. 
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Add or subtract, if possible. Assume that all variables represent non-negative values. Simplify your answer. 5
+ 3
A. 24
B. 15
C. 8
D. 8
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6a2x3)/(2ax4) =
a. 3ax-1 b. 3a2x7 c. 3a3x d. 12a3x7 e. 12ax-1
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Add.241 + 797
A. 522 B. 1038 C. 622 D. 638
Mathematics