Identify the corresponding word problem given in the inequality x less than or equal to 4.50

Rearrange the formula c^2 = a^2 + b^2 for b

If y varies directly as x2 and y=6 when x=6, find the constant of variation.

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)