You are building a deck that is 9.5 ft long, and you have posts that are 6 in square to use to build the railing. If you put the posts 4 feet apart with one on each end, how many posts will you use?

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.