In the period 1965 to 2003, the rate of increase of health-care spending in the U.S. was approximately K(t) = 17t 2 + 2600t + 55,000 million dollars per year where t is the number of years since 1990.34 Use a definite in- tegral to estimate the total change in health-care spending from 1980 to 2000. (Round your answer to two significant digits.)