Question

amount vs time
which term describes
what is happening in
the amount per trial
vs. time graph?
nothing is
consumed.
a negative amount
is eaten.
a changing amount
is eaten.
a constant amount
is eaten.
amount consumed each trial
time (sec)

Explanation:

Step1: Analyze the graph

The graph is a straight line with a positive slope, showing the relationship between amount consumed per trial and time. As time increases, the amount consumed also increases.

Step2: Evaluate each option

• "Nothing is consumed": The graph shows an increase in amount over time, so this is incorrect.
• "A negative amount is eaten": Amount consumed can't be negative in this context, and the graph has positive values, so this is incorrect.
• "A changing amount is eaten": The slope of the line indicates that the rate of consumption (change in amount over change in time) is constant, but the amount itself is changing as time passes. Wait, no—wait, a straight line with constant slope means the rate of change (amount per unit time) is constant, but the amount consumed is changing (increasing) over time. Wait, but the option "A constant amount is eaten" would imply that the amount doesn't change with time, which would be a horizontal line. Since the line is increasing, the amount is changing (increasing) as time goes on. Wait, maybe I misread. Wait, the slope is constant, so the rate of consumption (amount per second) is constant. But the amount consumed over time is changing (increasing). So "A changing amount is eaten" is correct because as time increases, the total amount consumed increases (changes). Let's recheck the options:

• "A constant amount is eaten" would be a horizontal line (no change in amount with time), but the graph is a rising line, so amount is changing (increasing) with time. So the correct option is "A changing amount is eaten".

Answer:

C. A changing amount is eaten (assuming the options are labeled A, B, C, D with A: Nothing is consumed, B: A negative amount is eaten, C: A changing amount is eaten, D: A constant amount is eaten)