What’s the recurrence relation of 1,3,9,27

(answer in picture)

sum= when you add is how much the whole amount is

distance= when you use angles and it means how far it goes

step-by-step explanation:

step-by-step explanation:

. your answer will contain x - and y -terms. (1 point) x ( ¿¿ 2 − 7 ) 2 +( y 2 − 9 ) 2 √ ¿ 12. what is the distance from the directrix (the crocodile river) to the point ( x , y )? write this equation. your answer will contain a y -term.