Answer:
61
Explanation:
I just set up a table to see what was added each time to get from 19 to 37 in 3 terms. (6 is added each time)
The coordinates would be:
(1, 7) (2, 13) (3, 19) (4, 25) (5, 31) (6, 37) (7, 43) (8, 49) (9, 55) (10, 61)
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