Help me please for 12 D is 27

Which functions are even? check all of the boxes that apply. f(x) = x4 – x? f(x) = x2 – 3x + 2 f(x) = (x - 2) f(x) = x done

Find the value of x for which the lines are parallel.

Three times the sum of a number and seven is negative thirty-six. what is the number?