Gretchen bought 7/18 more rice than flour.
Your first and second derivatives which are the velocity and the acceleration respectively are correct.
The particle has reverses direction when v(t) ≤ 0 so at interval 2 < t < 5 sec.
You can substitute now t = 2 for s(2) and a(2) for first changing direction. Also t = 5 for s(5) and a(5) for second changing direction.
The answer is A. if she wants to save at least $100, the inequality sign should be reversed. the amount she saves should be more than 100.
Answer:
B C E G J
Step-by-step explanation:
