Please help i don't know what i did wrong on this problem

The vector position of a particle varies in time according to the expression r = 5.80 i − 6.60t^2j where r is in meters and t is in seconds.

i answered these questions correctly: velocity = -13.2tj, acceleration = -13.2j

Calculate the particle's position and velocity at t = 3seconds.
r=?
v=?

( i got r=59.68 and v=39.6 but those are wrong)

Position & velocity are both vectors so use the vector notation;
r = 5.80i -6.60(9)j = 5.80i - 59.4j

v = -13.2(3)j = -39.6j