The exponential function modeled below represents the number of square kilometers of land occupied by cane toads x years after this animal was first introduced into Australia.
Area Occupied by Cane Toads
Area (thousands of km)
1,200
1,100
1.000
900
800
700
600
500
400
300
200
100
0 5 10 15 20 25 30 35 *
Time (yr)
Time
Cyr)
0
5
10
15
20
Area
(cm)
36,500
53,600
78.800
115,780
170,120
250,000
25
30
35
367,300
539,700