Will give -what is the recursive rule for this geometric sequence? 7, 21, 63, 189, … a1=7; an=3⋅an−1 a1=21; an=7⋅an−1 a1=3; an=7⋅an−1 a1=7; an=13⋅an−1

Me with this one question, and i'll upvote the brainliest answer

Three baby penguins and their father were sitting on an iceberg 0.50.50, point, 5 meters above the surface of the water. the father dove down 4.74.74, point, 7 meters from the iceberg into the water to catch dinner for his kids. what is the father penguin's position relative to the surface of the water?

How many terms does the polynomial x^2 y^2 have