False. When simplified, 25:45 is equal to 5:9. Therefore, the two ratios are not equal
47.50/10 = 4.75
57/12 = 4.75
76/16 = 4.75
The unit rate is C. $4.75
As you can see clearly the first equation and the second equation descripe the same line so the have infinite soultions that is why it is a coincident system
(9x - 1)² = <em>81x² - 18x + 1</em>