An object moves in simple harmonic motion with amplitude 13 and period 3 minutes. At time t=0 minutes, its displacement d from rest is 0 m, and initially it moves in a negative direction.

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The question is kind of confusing. if it's asking how many variations of answers can you give. then do 4^5 for your answer.this would be something like the first question could be a and the 2nd c or first b next c etc. if you can, ask the teacher for a better confirmation of what it's asking. if i'm assuming correctly what it's asking, it's 625 different variations.