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In 2017, there were approximately 742.5 thousand electricians in a large country, with demand for electricians expected to increase by 6.27 thousand each
a. Assuming the number of electricians in 2017 represents the demand for that year, express the demand for electricians in the country, D, in thousands, as
b. If the demand increases as expected, during which year will demand for electricians in the country reach 800 thousand?