Can someone please help me?

The position of an object at time t is given by s(t) = 7 - 14t. Find the instantaneous velocity at t = 7 by finding the derivative.

Question

Can someone please help me? 

The position of an object at time t is given by s(t) = 7 - 14t. Find the instantaneous velocity at t = 7 by finding the derivative.

anonymous · Answer

If you take the derivative of s(t) with respect to t and then evaluate that at t=7 that will give you the answer.
Hint: try the power rule in your shortcuts to differentiation

anonymous · Answer

I'm confused. Is it basically saying t=7 is like "at" x=7? In which case would I just plug "7" in for the t variable?

anonymous · Answer

No, you first need to take the derivative of the function before you plug in a 7 for the t

hint 2: there will be no t in the derivative function, unless you copied it down wrong and it's actually t^2.

anonymous · Answer

i don't understand