If juanita runs every third day and swims every fifth. if she runs and swims today how many days until she runs and swims again

What is the area of a triangle with vertices at (-3 3) (-3,2) and (1,2)?

Answer! if you don’t mind, can you explain

1. if events a and b are non-overlapping events, how do you find the probability that one or the other occurs? 2. what does it mean if p(a or b) equals 1?