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given s(t)=3t +5t+3, find the instantaneous velocity when t i= 5.

3 answers

ds/dt is the velocity.

Assuming you meant

s(t) = 3t^2 + 5t + 3

ds/dt = 6t + 5

so plug in t=5.
Hi Steve, can you show me step by step how to factor this, because my numbers compared to the correct numbers are way too low and I don't know what I'm doing wrong.
how to factor what?

ds/dt at t=5 is just

6*5+5 = 35