yes they are equivilent because of the distributive property
which is
a(b+c)=ab+ac
or in this case
5(p+c)=5p+5c
if you don't believe it *cough* *cough* *Brainiac01* *cough* *cough*
then subsitute values
lets sayp=4 and c=3
5(4)+5(3)=5(4+3)
20+15=5(7)
35=35
tada
so the answer is yes