17. Find the distance between the points (12,9) and (0,4).

J. 15 units
K. 14 units
L. 13 units

Using the distance formula, we can determine the distance between the two points:

Distance = √((12-0)^2 + (9-4)^2)
= √(12^2 + 5^2)
= √(144 + 25)
= √169
= 13 units

Therefore, the correct answer is L. 13 units.