Answer
current source: $P=-36W$ (delivered)
R: $P=30W$ (absorbed)
Work Step by Step
First calculate V1 using KVL
$ΣV = 5 -3 +10 -v1 =0$
$v1=12V$
now calculate the power of the current source,
multiply by a negative to put it into passive convention
$P = -(12*3)=-36W$ (delivered)
Now for the resistor, the current is 3A from the source, and is already in passive convention
$P = 10 * 3 = 30W$ (absorbed)
