Express the number in scientific notation.0.000315
A. 3.15 × 10-3
B. 3.15 × 104
C. 3.15 × 10-4
D. 3.15 × 10-5
Answer: C
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A. x - 
B. 3
C. 
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Provide an appropriate response.When solving an equation, you should attempt to isolate the unknown on the right side and the numbers/symbols on the left side.
A. True B. False
The level of ozone, an invisible gas that irritates and impairs breathing, present in the atmosphere on a certain May day in the city was approximated by
?
where 
is measured in pollutant standard index (PSI) and t is measured in hours, with 
corresponding to 
a.m.
?
Use the second derivative test to find the approximate value of t where the function A has a relative maximum. Round to the nearest integer.
?
A. 
B. 
C. 
D. 
E. 
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