Provide an appropriate response.Graph the parabola: y = x2 + 6x + 8. Determine the equation of the axis of symmetry.
A. y = 3
B. x = -3
C. x = 3
D. y = -3
Answer: B
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Solve for the indicated variable.I = Prt, for r (simple interest)
A. r = 
B. r = 
C. r = P - tI
D. r = 
Provide an appropriate response.Find f (f-1(9))
A. 4 B. 9 C. 7 D. 6
Solve the problem.The height in meters of women of a certain tribe is approximated by h = 0.52 + 2 log 
where t is the woman's age in years and 1 ? t ? 20. Estimate the height (to the nearest hundredth) of a woman of the tribe 4 years of age. (Round to the nearest hundredth.)
A. 0.52 m B. 0.96 m C. 0.77 m D. 1.12 m
Use the Montonicity Theorem to find where the function is increasing and where it is decreasing.f(x) = x3 - 4x
A. Decreasing on (-?, ?)
B. Increasing on 
, decreasing on 
C. Increasing on 
, decreasing on 
D. Increasing on 
, decreasing on 