Question

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Answer 1

3. The time interval(s) when the particle is moving right
I said: the particle is moving to the right if v > 0
t^2 – 9t + 18 > 0
(t-6)(t-3) > 0
So v < 0 for 3 > t >6

4. The time interval(s) when the particle is
I said:
a. going faster a > 0
b. slowing down a < 0

but these were both wrong

Answer 2

What were the question, you just posted your answers.
Please help us help you ^_^
a lot of student just post without considering what they really posting.
Clear problem and clear question is a huge step in solving the problem or answering the question.