determine the current flowing thru an element is the charge flow is given by:

(a) $\displaystyle q(t) = (3t+8) mC$

assume the way to do this is just

$\displaystyle

i= \frac{dq}{qt}=\frac{d}{dt} (3t+8)mC= \boxed{3mC}

$

assume we keep the same units for answer.

there are 4 more of these

just seeing if doing what should be.