Eliza's backpack weighs 18 7/8pounds with her math book in it, without her math book, her backpack weighs 14 7/9pounds. How much does Eliza's math book

Nine more than four times a number is the same as one less than twice the number. find the number?

Find the nonpermissible replacement for binthis expression. b2/5b +5

Scenario: susan wants to make 2 square flags to sell at a crafts fair. the fabric she wants to buy is 3 meters wide. she doesn't want any fabric left over. what's the least amount of fabric she should buy? question: which equation will susan solve her problem? note: let x represent the length of 1 side of the flag. options: 1) 2x^2 = 4x 2) 8 +2x = 2(4x) 3) 2 * 2 = 4 * 2 4) 4x^2 -2x = 0