if i put 8 in my input and i get out 31 what is my eqation

if i put 8 in my input and i get out 31 what is my eqation

if i put 8 in my input and i get out 31 what is my eqation

"Order a similar paper and get 15% discount on your first order with us
Use the following coupon
"FIRST15"

Order Now