Solve the problem.The following scatter diagram shows heights (in inches) of children and their ages.Height (inches)
Age (years)Based on this data, how old do you think a child is who is about 39 inches tall?
A. 3 years
B. 7 years
C. 3 months
D. 1 year
Answer: A
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Graph the inverse of the function plotted, on the same set of axes. Use a dashed curve for the inverse.
A. 
B. 
C. 
D. 
Function is its own inverse.
?Find the point(s), if any, at which the graph of f has a horizontal tangent line.
?
?
A. ?
, 
B. ?
, 
C. ?
, 
D. ?
, 
E. ?, 
Solve the problem.John (whose line of sight is 6 ft above horizontal) is trying to estimate the height of a tall oak tree. He first measures the angle of elevation from where he is standing as 35°. He walks 30 feet closer to the tree and finds that the angle of elevation has increased by 12°. Estimate the height of the tree rounded to the nearest whole number.
A. 61 ft B. 90 ft C. 86 ft D. 67 ft
Find f"(x) for the function.f(x) = 
A. 
B. 
C. 
D. 