What is the remainder of x3 + 4x2 − 7x + k divided by (x − 2)

Answer this question only if you know the answer! 30 points and

7. if the value of x varies directly with the value of y, and x = 3 when y = 21. what is the valu y, and x = 3 when y = 21. what is the value of x when y = 105?

For what value of (y) is 3^3/3^y =1/9