No pic/link just type answer pls.

In the figure dhg fhe which statement is true by cpctc

The lengths of two sides of a right triangle are given. find the length of the third side. round to the nearest tenth if necessary. a) y = 12/5x + 39/5 b) y = 5/12x + 5/39 c) y = 12/5x - 39/5 d) y = 5/12x - 5/39

How do i i solve this equation? -18 = x/3 + 3