How do you begin isolating the variable x to one side of the equation?
1 answer:
You might be interested in
Answer:
A. 3 < t < 9
Step-by-step explanation:
You have successfully found the values of t where the motion turns around (t=3 and t=10). Your knowledge of odd-degree polynomials tells you that the value of s(t) is decreasing for t < 3 (because the leading coefficient is negative), and is also decreasing for t > 10.
That is, the value of s(t) is increasing between t=3 and t=10, which means the particle is moving to the right in that interval. Since the function is only defined on the interval [0, 9] the particle is moving to the right on the interval (3, 9).
_____
At t=3 and t=10, the particle is stationary, moving neither right nor left.
