Airport administrators usually price airport parking at a rate that discourages people from using the parking lot for long periods of time. The rate structure for an airport is given in the table below.
0 < t ≤ 1
1 < t ≤ 2
2 < t ≤ 4
4 < t ≤ 7
7 < t ≤ 12
a. The cost when the time t = ...
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