A(n) is any number from the set
{...,-3, -2, -1,0, 1, 2, 3, ...).

Please help me

Right triangle lmn has vertices l(7, –3), m(7, –8), and n(10, –8). the triangle is translated on the coordinate plane so the coordinates of l’ are (–1, 8). (x, y) → (x + 6, y – 5) (x, y) → (x – 6, y + 5) (x, y) → (x + 8, y – 11) (x, y) → (x – 8, y + 11)

If the formula (formula in picture) were used to find the r-value of the following data, what would be the value of to three decimal places?

Solve for x a. b. will mark brainliest!