Under a dilation centered at the origin, the image is congruent to the preimage. what is the scale factor?

a. _1 or 0 c. only 1
b. 0 or 1 d. _1 or 1

There are a total sales of 2,000 dollars on monday on tuesday sales dropped 10% on wednesday sales dropped another 20% compared with tuesday from wednesday to thursday sales increases by an equal amount to 25% of monday total sales what is the net change in dollars on total sales from monday to tuesday