What is this 1/2x1.5+11

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)

F(x)=5/6x+3 which of the following is true

Angela plays soccer and golf for a total of 125 minutes every day. she plays soccer 45 minutes more than she plays golf. part a: write a pair of linear equations to show the relationship between the number of minutes angela plays soccer (x) and the number of minutes she plays golf (y) every day. (5 points) part b: how much time does angela spend playing golf every day? (3 points) part c: is it possible for angela to have spent 80 minutes playing soccer every day? explain your reasoning. (2 points)