25,000 bricks were used to build the new library. the total weight of the bricks was 30,000 pounds. what is the weight of each brick? which let statement(s) would you use?
a. let w= the weight of one brick.
b. let w= the total weight of the bricks.
c. let w= the total number of bricks.

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.