URGENT URGENT URGENT. Need help with this test. its due tomorrow night and my teacher hasn't talked about this subject what so ever

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

The area (a) of a circle with a radius of r is given by the formula and its diameter (d) is given by d=2r. arrange the equations in the correct sequence to rewrite the formula for diameter in terms of the area of the circle.

Is the response to the survey question "did you smoke in the last week question mark "response to the survey question "did you smoke in the last week? " a discrete random variable, a continuous random variable, or not a random variable?