A carpenter is making a backyard deck. In the measurements, he has determined that he needs to make a support triangle with an area of 22m2. He knows that the base must be 1 less than 3 times the height. If the base is represented by 3x-1 and height equals x. Find the equation that correctly shows the area of the triangle. Group of answer choices

1/2x(3x - 1) = 11

x(3x -1) = 11

x(3x - 1) = 22

1/2x(3x - 1) = 22