Answer:

Step-by-step explanation:
Each y is 3 times the last one, so it's geometric, so exponential. 3 should appear as the base.
Answer:
6a+4b-14
Step-by-step explanation:
For this, we have to use the distributive property.
This means we multiply each value in the parentheses by 2.
2*3a=6a
2*2b=4b
2*(-7)=-14
So our equation is:
6a+4b-14
You have to divide and 512/14=36 and 8/14 and that simplified is 36 and 4/7.
The answer is 54 hope this helps