Calculate the after-tax real rate of return earned on $5,000 by your selected savings options over a period of three years. This will help your comparison. Remember, the real rate of return includes taxes on the interest earned and inflation. For this assignment, use a tax rate of 10% and an average cumulative rate of 3%.

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)