7. The manager of a water park keeps track of the amount of money collected,
m, and the number of tickets sold, 1, each day. Which best describes the
variables m and ?
A. The variable t is the independent variable because it affects the
amount of money collected, m, each day.
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B. The variable t is the dependent variable because it depends on
the amount of money collected, m, each day.
C. The variable m is independent of variable i, and variable i is
independent of variable m.
D. The variable m is the independent variable because it depends on
the number of tickets sold, t.