The geologist C. F. Richter defined the magnitude of an earthquake to be 
where I is the intensity of the quake (measured by the amplitude of a seismograph 100 km from the epicenter) and S is the intensity of a ”standard” earthquake (where the amplitude is only 
cm). The 1989 Loma Prieta earthquake that shook San Francisco had a magnitude of 7.9 on the Richter scale. The 1906 San Francisco earthquake was 12 times as intense. What was its magnitude on the Richter scale?
a. 12
b. 11
c. 9
d. 14
e. 13
c. 9
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Solve.Marco had 
in his checking account. He wrote a 
check for his car payment, deposited his 
paycheck, and then wrote a 
check for his rent. What is the current balance in his account?
A. $1766 B. $638 C. $888 D. $2016
Provide an appropriate response.Find the standard deviation of the following: 65, 45, 36, 21, 70, 93 Round answer to tenths.
Fill in the blank(s) with the appropriate word(s).
For the given value of s, decide in which quadrant an angle of s radians lies by evaluating sin s and cos s.s = 66
A. III B. IV C. I D. II
Even with most of the problem missing, it is possible to tell whether a suggested answer is reasonable. Determine whether the answer given is reasonable. If it is unreasonable, move the decimal point or insert a decimal point to make the answer reasonable.How long did it take her to walk a mile?1.7 minutes
A. Unreasonable, should be 17 minutes B. Unreasonable, should be 1700 minutes C. Unreasonable, should be 170 minutes D. Reasonable