A survey asked national park visitors to choose their favorite type of landscape. The results are shown in the following table.
(a)Find the percentage for each type of landscape.
Type of landscape Number of park visitors Percentage
Lakeside 8160
Jungle 8880
Desert 4800
Coast 2160

(b)Construct a percent bar graph for the data.

Question 2 (essay worth 10 points) (03.02 mc) in δabc shown below, point a is at (0, 0), point b is at (x2, 0), point c is at (x1, y1), point d is at x sub 1 over 2, y sub 1 over 2, and point e is at the quantity of x sub 1 plus x sub 2 over 2, y sub 1 over 2: triangle abc is shown. point d lies on segment ac and point e lies on segment bc. a segment is drawn between points d and e. point a is at the origin. prove that segment de is parallel to segment ab.