Joshua is reading a book for history class. He has read 180 pages so far. This number represents 30% of the total
number of pages in the book.
What is the total number of pages in the book?
54 pages
126 pages
385 pages
600 pages
Oo oo

Bismuth-210 is an isotope that radioactively decays by about 13% each day, meaning 13% of the remaining bismuth-210 transforms into another atom (polonium-210 in this case) each day. if you begin with 233 mg of bismuth-210, how much remains after 8 days?

Which inequality comparing two of the expressions is true when 0.7 < x < 0.9

Isabel graphed the following system of equations. 2x – y = 6 y = -3x + 4 she came up with the solution (2,-2). what were the 3 steps she did to get that solution? (make sure they are in the correct order)