Solve the problem.The tread life of a particular brand of tire is a random variable described by a normal distribution with a mean of 60,000 miles and a standard deviation of 2300 miles. What is the probability a particular tire of this brand will last more than 57,700 miles? Express the probability as a decimal.
A. 0.16
B. 0.84
C. 0.975
D. 0.68
Answer: B
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Provide an appropriate response.Write 
as a whole or mixed number in lowest terms.
A. 
B. 42
C. 
D. 
Solve. Remember to insert units when writing your answer.Four years ago, John planted a tree in his garden. It was 4 ft 5 in. tall. Since then the tree has grown 7 ft 11 in. How tall is the tree now?
A. 11 ft 16 in. B. 11 ft 4 in. C. 12 ft 6 in. D. 12 ft 4 in.
A die is rolled twice. Write the indicated event in set notation.The sum of the rolls is either 3 or 4.
A. {(1, 2), (2, 1), (1, 3), (3, 1), (2, 2)} B. {(1, 2), (2, 2)} C. {(1, 2), (1, 3), (2, 2)} D. {(2, 1), (3, 1), (2, 2)}
Solve the problem.The half-life of aspirin in a person's bloodstream is about 15 minutes. If a person's bloodstream contains 256 milligrams of aspirin, how much of that aspirin will remain after 105 minutes?
A. 2 mg B. 36.571 mg C. 1 mg D. 4 mg