Two angles with measures that have a sum of 90 degrees

Is a currency whose value is tied to another currency, meaning that the exchange is fixed

Rachel reads 1/5 of the pages of a book plus 12 pages on the first day. on the second day, she reads 1/4 of the remaining pages plus 15 pages. on the third day, she reads 1/3 of the remaining pages plus 18 pages. on the fourth day, she reads the remaining 70 pages. how many total pages are in the book?

The step function g(x) is defined as shown. what is the range of g(x)? ***answer choices in picture.