Final answer:
The accurate formula reflecting the relationship between last year's and this year's enrollment is T = L - 186. There are 3293 students enrolled this year.
Step-by-step explanation:
i) T = L - 186
ii) To find this year's enrollment, we substitute the value of L from the given information:
T = L - 186
T = 3479 - 186
T = 3293
Therefore, the accurate formula reflecting the relationship between the two variables is T = L - 186 and there are 3293 students enrolled this year (option c).