Solve the problem.The Richter Scale measures the magnitude M of an earthquake. An earthquake whose seismographic reading measures x millimeters 100 kilometers from the epicenter has magnitude M given by M(x) = log 
. Give the magnitude of an earthquake that resulted in a seismographic reading of 90,800 millimeters 100 kilometers from its epicenter. Round to the nearest tenth.
A. 8.0
B. 7.0
C. 2.0
D. 9.0
Answer: A
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At one high school, the mean time for running the 100-yard dash is 
with a standard deviation of 0.9 seconds. The times are very closely approximated by a normal curve. Find the percent of times that are:Between 16.1 and 17 seconds
A. 34% B. 13.6% C. 12% D. 27%
Find the indicated control limits.For a production process for which there is a great deal of data since its last modification, the population mean ? and the population standard deviation ? are assumed known. For such a process we have the following values for an R chart:central line = d2?, UCL = D2?, LCL = D1?(The values of d2, D1, and D2 are found in the table of control chart factors). In a bottling factory, after bottling, the volume of juice in seven sample bottles is checked every 30 minutes. For this process, 
and 
Find the central line, UCL, and
LCL for the range. A. 0.08, 0.160, 0.000 B. 0.216, 0.416, 0.016 C. 0.216, 0.154, 0.006 D. 0.203, 0.406, 0.000
Solve the problem.The sum of two numbers is 104. The second number is three times as large as the first number. What are the numbers?
A. 24, 72 B. 24, 80 C. 23, 81 D. 26, 78
Provide an appropriate response.If the demand equation for a product is q = 
, where q is the number of units demanded at price p per unit, find the elasticity of demand when p = 48.
Fill in the blank(s) with the appropriate word(s).