James is painting his room he created a mixture with 3 cups of green paint for every 5 cups of black paint if he decides to make a larger mixture and uses 7.5 cups of black paint how much green paint will he use?

Guys i really need or i have to stay late up night

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)

If x-1 and x+3 are the factors of x3+10x2+ax+b find a and b