A point on the terminal side of an angle ? is given. Find the exact value of the indicated trigonometric function of ?.(-4, -3)Find sin ?.
A. - 
B. 
C. - 
D. 
Answer: A
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Classify the function as a polynomial function, rational function, or root function, and then find the domain. Write the domain in interval notation.f(x) = 
A. rational function; (-?, ?) B. rational function; (-?, -8) ? (-8, ?) C. rational function; (-?, 1) ? (1, ?) D. rational function; (-?, -8) ? (-8, 1) ? (1, ?)
Find another name for the given number, but with the denominator indicated.
= 
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
Rewrite using a negative exponent.
A. 2-b-1 B. b2 C. b-2 D. 2-b