Solve.Claire has received scores of 85, 88, 87, and 75 on her algebra tests. What is the minimum score she must receive on the fifth test to have an overall test score average of at least 83? (Hint: The average of a list of numbers is their sum divided by the number of numbers in the list.)
A. 80
B. 79
C. 81
D. 78
Answer: A
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Solve the problem.Assume that the temperature of a person during an illness is given by 
for 
where T is the temperature (°F) at time t, in days. Sketch the graph of the function. Find the maximum temperature and the time at which it occurs. 
A. 
Maximum temperature is 101.6°F;
occurs after 7.5 days
B. 
Maximum temperature is 101.6°F;
occurs after 5.5 days
C. 
Maximum temperature is 98.6°F;
occurs after 11 days
D. 
Maximum temperature is 102.6°F;
occurs after 5.5 days
Use Bayes' rule to find the indicated probability.Two stores sell a certain MP3 players. Store A has 34% of the sales, 5% of which are of defective items, and store B has 66% of the sales, 1% of which are of defective items. The difference in defective rates is due to different levels of pre-sale checking of the product. A person receives a defective item of this product as a gift. What is the probability it came from store B?
A. 0.275 B. 0.22 C. 0.5667 D. 0.7083
Perform the indicated operations and simplify the result. Leave the answer in factored form.
? 
A. 
B. 
C. 
D. 
Decide whether or not the Law of Sines can be used to solve the triangle. Do not solve the triangle. 
A. Yes B. No