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**massid** I'm completly lost with the calculus that underlies this physics! Please help me figure out where to start!

The position function *x*(*t*) of a particle moving along an *x* axis is *x* = 6.00 - 6.00*t*2, with *x* in meters and *t* in seconds. **(a)** At what time and **(b)** where does the particle (momentarily) stop? At what **(c)** negative time and **(d)** positive time does the particle pass through the origin? Graph *x* versus *t* for the range -5 s to +5 s. **(e)** To shift the curve rightward on the graph, should we include the term +20*t* (denote 1) or the term -20*t* (denote 0) in *x*(*t*)? **(f)** Does that inclusion increase (denote 1) or decrease (denote 0) the value of *x* at which the particle momentarily stops?