There are 20 entries in the chess tournament. how many ways can they finish in first, second,
and third place?

What are the domain and range of f(x)=[1/5]x

Given f(x)= 9x+1 and g(x)=x^3, choose the expression (f*g)(x)

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)