Answer:
Domain:[tex]0 \le t \le 9[/tex]
Range: [tex]7200 \ge \ d \ge \ 0[/tex]
Step-by-step explanation:
Given
[tex]d = 7200 - 800t[/tex]
Required
Determine the domain and range
From the attached graph, the values of t (on the horizontal axis) starts from 0 and ends at 9.
Hence, the domain is: [tex]0 \le t \le 9[/tex]
When t = 0:
[tex]d = 7200 - 800t = 7200 - 800 * 0 = 7200[/tex]
When t = 9
[tex]d = 7200 - 800t = 7200 - 800 * 9 = 0[/tex]
Hence, the range is:
[tex]7200 \ge \ d \ge \ 0[/tex]
