1. misspelled?

Me and my friends think my teacher think our teacher mispelled this problem because it makes no sense to us whatsoever.. here it is:
Use parametric equations to simulate motion:
S= -0.1(t^3 -20t^2 + 110t = 85) 0<(or equal to) t < (or equal to) 12
Gary walks along a horizontal line and those are the coordinates of his position...
to me, the = sign there makes absolutely no sense.. i think it could be a + but i still dont know how to solve it..

2. Hello, ijleyton!

I agree . . . the second "=" is probably a "+".

Use parametric equations to simulate motion:

. . $S\;=\; -0.1(t^3 -20t^2 + 110t + 85),\;\;0 \leq t \leq 12$

Gary walks along a horizontal line and those are the coordinates of his position.
You forgot to give us the question(s) . . .

3. thats the question :-s: Simulate the motion.. i guess it means graph.. but even if its a + ... how would i do it ?

4. Originally Posted by ijleyton
thats the question :-s: Simulate the motion.. i guess it means graph.. but even if its a + ... how would i do it ?
There is no simple way to graph this function. You'll have to use long arithmetic to graph the points between zero and twelve or use a calculator.