1. The universal set is the set of all objects under consideration. Find all solutions to the equation x^2 =25. Assume the universal set U is a) u= {0,1,2,3,...}
b)U={...,-3,-2,-1,0,1,2,3}
c) U= {2,4,6,8,9,...}

Im not 100% what its wanting me to do, I would just like to understand it and know how to do it.

Car a and car b were in a race .the driver of car b claimed that his car was twice as fast as car a

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

The graph below represents which system of inequalities? a. y< -2x+6 y< (or equal to) x+2 b. y< (or equal to) -2x+6 y c. y< 2/3 x - 2 y> (or equal to) 2x +2 d. none of the above