Plz answer the picture below fast and correctly!

The image of abc is a'b'c. what transformations would result in this image? abc is reflected over the line x = 1, then is rotated -90° around the origin. abc is reflected over the line y = x - 1, then t: (x, y) → (x - 1, y - 1). abc is rotated 90° around the origin, then is reflected over the y-axis. abc is rotated -90° around the origin, then is reflected over the line y = -1.

A11 gram sample of a substance that’s used to treat thyroid disorders has a k-value of 0.1247

Which expression gives the distance between the two points 2 5 and 4 8