Solve.Peter went shopping for CDs with $100 in his wallet. He bought two CDs for $7.99 each, three for $11.99 each, and one for $14.99. Sales tax was included in the prices. After paying cash for the purchases, how much did he have left from the $100?
A. $66.94
B. $31.26
C. $36.26
D. $33.06
Answer: D
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Perform the indicated operation. Write the answer in standard form.(3 - 7i)2
A. -40 - 42i B. 9 - 91i C. 58 - 42i D. 9 + 7i
Solve the problem. Round to the nearest cent unless otherwise noted.The amount of markup on a store item is $18. Find the cost to the store if the markup is 20%.
A. $3.60 B. $15.00 C. $90.00 D. $21.60
If f and g are continuous functions with f(9) = 6 and 
, find g(9).
a. g(9) = 21 b. g(9) = 15 c. g(9) = 12 d. g(9) = 24 e. g(9) = 3
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