Answer:
Table 1 = Proportional
y is 7 times x
Table 2 = Not proportional
Step-by-step explanation:
From the problem :

In multiplying expressions with the same bases, the exponent will be added accordingly.
For example :

the exponent of a are m and n, and the product will be a raised to the sum of m and n.
Applying this to the problem, we have :

The answer is d. 6^-1
Sorry its hard to read and see
Option 1: $120
Option 2: $155
Option 3: $130
Option 4: $135
So B. Option 1 is the better purchase