Review A tire store ordered
391 new tires, When
the shipment arrived,
25 tires were
defective. If the
remaining tires were
sold in groups of 4 to
be put on new cars,
how many new cars
got a full set of tires?
Explain the steps taken to
solve the problem
Explain how the solution
is reasonable
Represent the problem
using a different
M

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)