Ana is going to interview every student in her school. She would like to know about how many hours per week each student spends doing each of the following: reading, watching television, and playing video games. She plans to write a report based on her findings. Based on this information, which statements are true? I. Ana is conducting an experiment.
II. Ana is conducting a sample survey.
III. Ana is conducting a census.
IV. The distribution of the data will be approximately normal.

The price of an item has been reduced by 30%. the original price was $30. what is the price of the item now ?

Write the sine and cosine values of a, b, respectively, in the figure for (1) and (2) + explanation.

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)