Which of these is a goal of the sq3r method

the answer is a)   a sentence of death costs the state "almost three times as much as a sentence of life in prison" (delon 147)

. a function is a relation in which each input has only one output. in the relation , y is a function of x, because for each input x (1, 2, 3, or 0), there is only one output y. x is not a function of y, because the input y = 3 has multiple outputs: x = 1 and x = 2.