Luke saw 7 birds at the bird feeder some more birds flew over. now there are 15 birds at the bird feeder. how many flew over?

Aline parallel to a triangle's side splits ab into lengths of x - 5 and x + 2. the other side, ac, is split into lengths of x and x + 12. what is the length of ac? a) 12 b) 24 c) 36 d)

Which of the following contains a variable?

When i'm with my factor 5, my prodect is 20 .when i'm with my addend 6' my sum is 10.what number am i