Help plz answer needed fast

We just substitute in -12 for x in each one and see if it's true

2(-12)+6 = -24 + 6 = -18, not 30,   NOPE

-0.25(-12) - 1 = 3-1 = 2, that worked,  CHECK ME

-12 - 8 = -20, CHECK ME

-35(-12) +2 = 422, not -515, NOPE

3(-12+25)=3(13)=39, CHECK ME

in mathematics, a function is a relationship between two variables such that the value of one of the variables, called the dependent variable, is determined by the value of the other variable, called the independent variable. there is a specific term we use to describe the set of independent variables of a function.