Answer:
You sense you want to calculate 17% of 970 first. That would be 0.17 * 970 = 164.9. Next, you want to divide that by 40 squared, which is 40 * 40 = 1600. So, 164.9 / 1600 = 0.1031. Rounding that to the nearest tenth gives 0.1. Then, you mentioned to multiply by pi, so 0.1 * π ≈ 0.3142. Finally, subtracting 0.7 gives you x ≈ -0.3858.