Crude oil and petroleum products are imported continuously by the United States. The following table and figure

Question:

Crude oil and petroleum products are imported continuously by the United States. The following table and figure show the net expenditures for
U.S. oil imports for selected years (in billions of dollars per year).

(a) Use n = 5 equal subdivisions and left-hand endpoints to estimate the area under the graph from 2014 to 2024.

(b) What does this area represent in terms of U.S. oil imports?

Billions of 230 Year Dollars 220 + 2014 219.5 2016 192.0 210 2018 191.0 2020 198.9 200 2022 214.5 2024 228.4 190 F Year Billions of dollars per year 2014 + 2016+ K 2018 + +0707 2022+ 2024