Which recursive formula can be used to generate the sequence shown, where f(1) = 5 and n > 1?

5,–1, –7, –13, –19,

I’m which figure is point g an orthocenter

Antonia and carla have an equivalant percentage of green marbles in their bags of marbles. antonia has 4 green marbles and 16 total matbles. if carla has 10 green marbles , how many total marbles does carla have

[10 points, algebra 2]according to my answer key the restrictions are -1 and 4. but why not positive 1?