21pts!

In this investigation, you will be estimating the values of √40, √75, √90, √245, √450, √640 and √675 to the nearest hundredths place. Be sure to use at least two module vocabulary words in your responses.

1. Describe clearly what strategy you plan to use to estimate these values.

2. Estimate the values to the nearest hundredth and show or briefly describe your work. (refer to pic below)

3. Reflect on the calculations you made. What general methods or short cuts did you find to make the calculations easier as you did each calculation?

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)