Answer:
Second table.
Step-by-step explanation:
A function has an additive rate of change if there is a constant difference between any two consecutive input and output values.
The additive rate of change is determined using the slope formula,

From the first table we can observe a constant difference of -6 among the y-values and a constant difference of 2 among the x-values.

For the second table there is a constant difference of 3 among the y-values and a constant difference of 1 among the x-values.
The additive rate of change of this table is

Therefore the second table has an additive rate of change of 3.
7y+5-8y+6
Group like terms
7y-8y+5+6
-y+11
or 11-y
Converting to base 10 can be done easily by writing a sort of digit expansion. In base 6, this number literally means

Simplifying this gives the value in base 10.

3/2
divide the term but he previous and figure out the sequence