Graph the function by starting with the graph of the basic function and then using the techniques of shifting, compressing, stretching, and/or reflecting.f(x) = 
A. 
B. 
C. 
D. 
Answer: C
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For certain decisions, the time it takes to respond is a function of the number of choices faced. The relationship is
,
where R is reaction time in seconds, and N is the number of choices.A: Express using functional notation the reaction time if there are 8 choices. Then calculate that value. Round your answer to one decimal place if necessary. B: Make a graph of R versus N. Include up to 10 choices.C: Is the graph concave up or concave down? Explain in practical terms what the concavity of the graph means.
?
What will be an ideal response?
Solve the problem.Find the shaded area in the figure.
A. 39.5 cm2 B. 78.9 cm2 C. 223 cm2 D. Not enough information.
Solve the system of equations by the substitution method.
A. (-6, 6) B. (-7, 7) C. (7, -7) D. no solution
Factor completely. If the polynomial cannot be factored, say it is prime.x2 - x - 20
A. prime B. (x + 5)(x - 4) C. (x + 1)(x - 20) D. (x + 4)(x - 5)