Provide an appropriate response.The half-life of a radioactive substance is 65 years. If you start with some amount of this substance, what fraction will remain in 139 years?
A. 4.40
B. 0.01
C. 0.23
D. 0.05
Answer: C
Mathematics
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Solve the problem.Because of material shortages, it is increasingly expensive to produce 6.0L diesel engines. In fact, the profit in millions of dollars from producing x hundred thousand engines is approximated by 
where 
Find the point of diminishing returns.
A. (2.75, 106.26) B. (3.67, 16.63) C. (3.67, 62.26) D. (3.67, 106.26)
Mathematics
Write the augmented matrix for the system of linear equations.
A. 
B. 
C. 
D. 
Mathematics
Use interval notation to describe the interval of real numbers.x ? 3
A. (?, 3) B. (-?, 3] C. (3, ?) D. [3, ?)
Mathematics
Classify the type of probability as logical, empirical, or judgmental.Pr(Kevin rolls four 6's when he rolls a die 8 times)
A. Judgmental B. Empirical C. Logical
Mathematics