Your range on a graph always the values that y could possibly be. These often include infinity since lines trend in one direction or the other.
18. 0.625
19. -0.75
20. -4/10 = -0.4
1. The domain of the sequence shown is {1, 2, 3, 4, 5}. This is best matched by the description Natural numbers.
2. The common ratio is 3/1 = 9/3 = 3.
3. The first term of this geometric sequence is 1. The common ratio is 3. So, the explicit formula is f(x) = 1(3)^(x-1)
