Solve the problem.Round 1.6181 to the nearest thousandth.
A. 1.61
B. 1.618
C. 1.619
D. 1.62
Answer: B
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Solve the problem.Suppose that the amount of oil pumped from a well decreases at the continuous rate of 
per year. When, to the nearest year, will the well's output fall to one-eighth of its present value?
A. 2 years B. 10 years C. 15 years D. 22 years
Solve the problem.At a local zoo, adult visitors must pay $3 and children pay $1. On one day, the zoo collected a total of $730. If the zoo had 390 visitors that day, how many adults and how many children attended?
A. 170 adults and 220 children B. 182 adults and 208 children C. 220 adults and 170 children D. 110 adults and 280 children
Solve using Cramer's Rule.
A. (-3, 2) B. (-2, -3) C. (3, 2) D. (2, 3)
Tell whether the sampling strategy will result in a random sample from the population under consideration. If it is not random, explain why it is not.A researcher wishes to survey a random sample of high school teachers within a certain school district. There are 77 high schools in the school district. She lists the schools alphabetically and uses the calculator command 
to pick five numbers between 1 and 77. She visits the five schools corresponding to those numbers and interviews all teachers at each of the five schools.
What will be an ideal response?