Please help me with this Jim

Problem 5
Answers:
--------------------
Explanation:
In step 1, there are 2 dots which corresponds to dots A.
In step 2, there are 4 dots which corresponds to dots B.
=========================================================
Problem 6
Answer: A) Linear
--------------------
Explanation:
The sequence of dots for each of the steps is: {0, 2, 4, 6, ...}
Each time we're increasing by 2 dots. This suggests a linear pattern
The linear equation that models this is y = 2x. The slope is 2 and the y intercept is 0. The slope of 2 tells us how much the dots grow each time, while the y intercept tells us our starting point.