The velocity of a particle moving in a straight line is given by 
.
?
Given that the distance 
at 
, find an expression for s in terms of t without any unknown constants.
?
A. 
B. ?
C. ?
D. ?
E. ?
Answer: A
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Find the standard deviation s for the given data. Round your answer to one more decimal place than the original data.The manager of a small dry cleaner employs six people. As part of their personnel file, she asked each one to record to the nearest one-tenth of a mile the distance they travel one way from home to work. The six distances are listed below:17.6?15.4?43.4?46.3?18.5?24.7Compute the standard deviation(s).
A. 4587.1 B. 5526.5 C. 13.71 D. 44.9
Solve the inequality. Express your answer using interval notation.7x - 6 > 6x + 1
A. [7, ?)
B. (7, ?)
C. (-5, ?)
D. (-?, 7]
Solve the problem.If f(?) = cot ? and f(a) = -6, find the exact value of f(-a).
A. -6
B. - 
C. 
D. 6
Solve the problem.Roberto invested some money at 5%, and then invested $4000 more than twice this amount at 4%. His total annual income from the two investments was $1460. How much was invested at 4%?
A. $20,000 B. $2400 C. $24,000 D. $12,000