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Answer:
(d) D: [0, 60]; R: [-15, 0]
Step-by-step explanation:
The model is of the underwater portion of the net, so the only part of the graph we're interested in is that below the x-axis.
The x-intercepts of 0 and 60 define the bounds of the domain.
The range is the vertical extent of the graph in that domain, from y=-15 to y=0.
So, the domain and range are ...
Domain: 0 ≤ x ≤ 60
Range: -15 ≤ y ≤ 0
