The u. s weather bureau has a station on Mauna Loa in Hawaii that has measured carbon dioxide levels since 1959. At the time, there were 334 parts per million of carbon dioxide in the atmosphere. In 2005 the figure was 386 parts per million. Find the increase in carbon dioxide levels and the percent of the increase. Round to the nearest tenth of a percent. Increase carbon dioxide levels? Percent increase?

An equation of the line tangent to y=x^3+3x^2+2 at its point of inflection is

You got a job selling magazines door-to-door. you are paid $100 per day plus $1.50 for each magazine you sell. which recursive formula models this situation?

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 0 a. at what time does the particle reverse direction? b. when is the displacement positive? (round one decimal place and answer in interval notation) c. when is the displacement negative? (round one decimal place and answer in interval notation) d. when is the particle’s acceleration positive? (round one decimal place and answer in interval notation) e. when is the particle’s acceleration negative? (round one decimal place and answer in interval notation)