I dont know how the answer is 3400. Please help me. Thank you!

22.2 Question 28 (Algo) The table below shows national income and imports. The level of exports is fixed at $290. All figures are in millions of dollars. Question Help Income (Y) 2,200 3,000 3,800 4,600 Imports (1M) 230 270 310 350 Net Exports (NX) a b C d On a graph of the net export function for this economy, at what level of Y would the NX function intersect the horizontal axis? at $3,800 at $2,200 at $3,400 at $4,600