In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.

[Q]: Bilinear interpolation uses a weighted average of the _ nearest pixels.
[A]: four


[Q]: Black adults have three to _ times greater incidence of bacteremia, compared with white adults.
[A]: five


[Q]: Brown bears grow from _ and a half to nine feet long.
[A]:
six