Find the probability.Assuming that boy and girl babies are equally likely, find the probability that a family with four children has all boys given that at least one is a boy.
A. 
B. 
C. 
D. 
Answer: D
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Solve the equation.
= 4
A. ? B. {6, -6} C. {5, -5} D. {5}
Use the REGRESSION feature on a graphing calculator.The use of bottled water in the United States has shown a steady increase in recent years. The table shows the annual per capita consumption for the years 1995 - 2001.
With x being the years since 1995, find the linear function that represents this data. Round your answer to two decimal places.
A. y = 0.1x2 + 0.29x + 4.57 B. y = 0.89x + 4.07 C. y = 4.07x + 0.89 D. y = 0.04x3 - 0.23x2 + 1.01x + 4.35
Find the exact value of the expression.sec 
A. 
B. 2
C. 
D. 
Solve the problem.A deep sea diving bell is being lowered at a constant rate. After 8 minutes, the bell is at a depth of 500 feet. After 30 minutes the bell is at a depth of 1800 feet. What is the average rate of lowering per minute? Round your answer to the nearest tenth.
A. 0.02 ft per min B. 59.1 ft per min C. 43.3 ft per min D. 60.0 ft per min