Please help!! markup and markdown word problems. 1. A jeweler adds a 120% markup to a ring. If it originally cost $100, how much would a customer pay for the ring?

2. Drew bought a chemistry book for $30. Later that book was marked down by 20%
By how much has the value been decreased?

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