Will give brainliest to right answer +15 points
use the probability distribution graph to answer the question.

p(x≤a)=0.75

what is the value of a?

What is the probability of rolling a single die greater than 4

Evaluate the expression for the given value of the variable. 5×(h+3) for h=7

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)