Answer:
What is the value of GDP?
GDP = C + I + G + NX (X-N)
GDP = $200 + $40 + $50 + NX ($30 - $40)
GDP = $200 + $40 + $50 - $10
GDP = $280
What is the value of net domestic product?
NDP = GDP - Depreciation
NDP = $280 - $10
NDP = $270
What is the value of net investment?
The formula is the same as net domestic product, so the value of net investment is also $270
What is the value of net exports?
The value of net exports, as seen above, is -$10 (because the value of imports is higher than the value of exports).