Which value is the furthest from 0 on the number line?

a. 20
b. -21 (the one i chose)
c. |20.5|
d. |-21.5|

this is for my test correction

Find the midpoint of the segment with the given endpoint k(-4,4) and l(6,12)

Answer asap ! the shortest path from point a to point b goes through a pond. to avoid the pond, you must walk straight 34 meters along one edge of the pond, then take a 90 degree turn, and again walk straight 41 meters along another edge of the pond to reach point b. about how many meters would be saved if it were possible to walk through the pond? a. 11 m b. 20 m c. 30.45 m d. 21.73 m

In which direction does the left side of the graph of this function point? a(x) = 3x - x2 + 4x - 2