We can do this using Pythagorus,,,
87.5*2 - 52.5*2 = AB*2
4900 = AB*2
70 = AB
£67.00 / 7= £9.57that’s how much cost the hat
£67.00-£9.57= £57.43
£57.43/7= £8.20 per T-shirt
Work shown above! x = 117 degrees
The answer to your question is -10
It is the first option because if we go by the formula y=mx+b; m is the slope (which is equivalent between both lines) and then b is the y-intercept and we can see that the blue line intersects at approximately 1 and the red line intersects at approximately-3 so this makes it so that the best option is the first one