6/7, 12/14, 18,21, 24/28, 30/35, 36/42 in so on
Is this question lacking information? Because we don't know how much one pound costs.
The answer is translation of 2 units left and a reflection over the x-axis.
The triangle is translated 2 units left because the triangle moved two units to the left and it is reflected over the x-axis because the bottom triangle is like a reflection of the original triangle.
49 should be the correct answer.
-TheOneandOnly003