Let X denote the number of times Ron Weasley manages to irritate Professor Snape in one day. Then X has the following probability distribution: x f(x) 0 0.15 1 0.20 2 0.20 3 0.30 4 0.15 (a) () Find the probability that Ron will get in trouble with Professor Snape at least two times in one day. Round your answe

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)

Put the equation in slope intercept form by solving for y

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 9 + 12x + 4x^2