On the previous slide is a drawing of the Apollo Lunar Module. It is drawn at a scale of 1 to 50. 1. The “legs” of the spacecraft are its landing gear. On the drawing each leg is about 7cm tall. Estimate the actual length of each leg on the sides. Show your work to prove your answer.

Let r = 3. what is the value of r + 58?

An energy drink company claims that its product increases students' memory levels. to support its claims, the company issues advertisements claiming that 8 out of 10 people (chosen randomly from across the country) who tried their product reported improved memory. the missing component in this study is a .

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)