12.) The population of a country was 30 million in the year 2000 and has grown continually in the years following. The population P, in millions of the country t years
after 2000 can be modeled by the function P(t) = 30e0.34t , where t20.
Part A
Based on the model, what was the population after 6 years?
Part B
Based on the model, how long will it take for the population to reach 45 million?
O
MA

At wind speeds above 1000 centimeters per second (cm/sec), significant sand-moving events begin to occur. wind speeds below 1000 cm/sec deposit sand and wind speeds above 1000 cm/sec move sand to new locations. the cyclic nature of wind and moving sand determines the shape and location of large dunes. at a test site, the prevailing direction of the wind did not change noticeably. however, the velocity did change. fifty-nine wind speed readings gave an average velocity of x = 1075 cm/sec. based on long-term experience, σ can be assumed to be 245 cm/sec. (a) find a 95% confidence interval for the population mean wind speed at this site. (round your answers to the nearest whole number.) lower limit cm/sec upper limit cm/sec