Use the 68-95-99.7 rule to solve the problem.The amount of Jen's monthly phone bill is normally distributed with a mean of $80 and a standard deviation of $10. Fill in the blanks.68% of her phone bills are between $___ and $___.
A. 60, 100
B. 80, 90
C. 60, 80
D. 70, 90
Answer: D
Mathematics
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Solve.A baseball player gets 6 hits in every 11 times at bat. At this rate, if he made 42 hits, find how many times he batted.
A. 462 times B. 77 times C. 42 times D. 252 times
Mathematics
Solve the problem.Dave bought 10 packets of cookies for $32.00. Each packet of cookies contains 20 cookies. Find the cost of each cookie to the nearest tenth of a cent.
A. 3.2 cents B. 0.2 cents C. 16.0 cents D. 17.1 cents
Mathematics
Reduce the rational expression to lowest terms.
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.Use the add-on method to determine the monthly payment of a $15,000 loan at 9% interest for three years.
Fill in the blank(s) with the appropriate word(s).
Mathematics