Bluefin tuna are large fish that can weigh 1,500 pounds and swim at speeds of 55 miles per hour. because they are used in sushi, a prime fish can be worth over $30,000. as a result, the western atlantic bluefin tuna have been exploited, and their numbers have declined exponentially. their numbers in thousands from 1974 to 1991 can be modeled by f (x) = 230(0.881)x, where x is the year and x = 0 corresponds to 1974. in what year were there or will there be 50 thousand tuna?