Answer:
im not sure if it can be a decimal tell me if it cant but if it can its 0.25
Explanation:
0.25*8=2 2+3=5
and i get my answer by a little bit of trial and error. I knew that what ever i timed by 8 had to equal 2 in order for the +3 to get it to 5 and the only thing that you can times by 8 and get 2 is 0.25.