In 1970, the population of Houston, TX was 2,100,000. In 1980, it was 3,200,000. What was the population in 2010 to the nearest whole number? Round your k to four decimal places.

Astuntman jumping off a 20-m-high building is modeled by the equation h=20-5t^2, where t is the same in seconds. a high-speed camera is ready to film him between 15m and 10m above the ground. for which interval of time should the camera film him?