What is the cost of 1 half of a litre if 28p per litre

Solve the equation w^3 = 1,000 i honestly dont know how to punch this into a calculator pls

Consider that lines b and c are parallel. what is the value of x? what is the measure of the smaller angle?

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)