Kuniko needs a computer technician to set up a network the technician charges $150 for parts plus $55 for each hour worked. Kuniko doesn't want to spend more than $450 . Which inequality would represent this situation if x is the number of hours worked?

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)