Can someone please help me. I need the answer right know.

Suppose the first five terms of a sequence are 4, 5, 9, 27, 123. how could the next term in the sequence be generated?

Manny bought 12 pounds of vegetables at the supermarket. 75% of the vegetables were on sale. how many pounds of vegetables were not on sale? 98 points : )

Find the center and the radius of the circle with the equation: x^2-2x+y^2+4y+1=0?