Provide an appropriate response.Explain the distinction between ratio and proportion. Give examples.
What will be an ideal response?
Answers will vary. A ratio is a comparison, whereas a proportion is a statement that two ratios are equal. For example, 
is a ratio and 
= 
is a proportion.
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Use Bayes' rule to find the indicated probability.The incidence of a certain disease on the island of Tukow is 4%. A new test has been developed to diagnose the disease. Using this test, 91% of those who have the disease test positive while 4% of those who do not have the disease test positive (false positive). If a person tests positive, what is the probability that he or she actually has the disease?
A. 0.438 B. 0.487 C. 0.91 D. 0.856
Simplify.
A. 44 B. -20 C. 22 D. -44
Simplify the root, if possible.
A. 
+ 5
B. 
C. z + 5
D. -z - 5
Without graphing, find the line of symmetry.f(x) = - 
(x + 6)2 - 1
A. x = -1 B. x = -6 C. x = 7 D. x = 5