They both drive 18 miles north, so if amir goes 18 miles west and Anna goes East, it is just 32 minus 18: she drove 12 miles east.
The first graph is c. c - 7 < 3.
The second graph is a. c + 7 ≤ 3.
The third graph is b. c - 3 > 1.
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6 × (13 - 6) = 42, not 7, but 7² is 49 and 42² is 1,764.
I hope this helps!