Find the relative extrema and points of inflection of the function. List your answers in terms of ordered pairs. Then sketch a graph of the function. 
Relative maximum at 
relative minimum at 
point of inflection at (0, 0) ;
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Find the area of the shaded part of the figure if a = 6, b = 9, c = 2.
?
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A. 45 B. 26 C. 120 D. 66 E. none of these
Provide an appropriate response.Use the tangent function to find the indicated part of triangle ABC. Round to the nearest 0.1°. Find A if b = 18.9 m and a = 7.2 m.
A. 20.9° B. 69.1° C. 2.5° D. 20.2°
Evaluate using substitution. 
What will be an ideal response?
Chemists measure the acidity of an aqueous solution using pH. The pH is 
where pH is a measure of the hydrogen ion concentration 
measured in moles of hydrogen per liter of a solution. Find the pH of a solution if 
= 
. Round your answer to one decimal place, if necessary.
a. 6.7 b. 5.2 c. 6.2 d. –6.7