The end of a house has the shape of a square surmounted by an equilateral triangle. If the length of the base is measured to be 35 feet, with a maximum error in measurement of 1 inch, calculate the area of the end. (Round your answer to two decimal places.)

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 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)