Assume the distribution is normal. Use the area of the normal curve to answer the question. Round to the nearest whole percent.The average runner at a local college runs the mile in 4.5 minutes, with a standard deviation of .3 minutes. What is the probability that a person will run a mile in less than 4 minutes?
A. 5%
B. 3%
C. 4%
D. 7%
Answer: A
Mathematics
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Use implicit differentiation to find the specified derivative at the given point.Find 
at the point (2, 1) for ln x + xy2 + ln y = 0.
A. 1
B. 
C. -1
D. - 
Mathematics
Find the exact value of the expression using the provided information.Find cos(s + t) given that cos s = 
, with s in quadrant I, and 
with t in quadrant II.
A. - 
B. 
C. 
D. - 
Mathematics
Determine the quadrant in which the terminal side of angle ? lies.cos ? > 0 and csc ? < 0
A. Quadrant II B. Quadrant III C. Quadrant IV D. Quadrant I
Mathematics
Find the Taylor series for the given function.f(x) = x9 ln(1 + 7x)
A. 
B. 
C. 
D. 
Mathematics