Identify the function that has a vertex of (2,-1) and is stretched vertically by a factor of 3.
of(x)=1/x - 21-1
o f(x) = ix - 21 + 4
of(x) = 12/x + 21-1
f(x) = 3/x - 21-1

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