9^2(x-1) = 27^x how do I solve this equation?

This is geometry. could anyone ? i can't fail this class. my grade is quite low already.

Which is the equation of an ellipse with directrices at x = ±4 and foci at (2, 0) and (−2, 0)?

You got a job selling magazines door-to-door. you are paid $100 per day plus $1.50 for each magazine you sell. which recursive formula models this situation?