Multiply.
? 
A. 
B. 10x
C. 7x
D. 
Answer: A
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The attendance at an elementary school open house was only half of what the principal had expected. If 103 people visited the school that evening, how many had she expected to attend?
A. 105 B. 206 C. 103 D. 205 E. 52.5 F. 309 G. 51.5
Find the Taylor series for the given function.f(x) = x8 ex
A. 
B. 
C. 
D. 
Perform the indicated operations. Simplify the result.
- 
- 
A. 
B. 
C. 
D. 
The amount of nitrogen dioxide, a brown gas that impairs breathing, present in the atmosphere on a certain May day in a city has been approximated by
?
?
where A(t) is measured in pollutant standard index (PSI), and ?t is measured in hours, with 
corresponding to 4 a.m. Use the trapezoidal rule with 
to estimate the average PSI between 4 a.m. and noon. Please round the answer to the nearest hundredth. (Hint: 
.)
?
A. 106.95 nitrogen dioxides
B. 108.79 nitrogen dioxides
C. 159.77 nitrogen dioxides
D. 102.79 nitrogen dioxides
E. 129.7 nitrogen dioxides