Yes, you are correct.
Hope my answer helped u :)
Answer:
2
Step-by-step explanation:
A=8
Explanation: a+b=12 a-b=4
^^^^^^^ ^^^^^^
8+4=12 8-4=4
A=8
For the second question, your first option is correct, you would rewrite 8 in power-base form 8=2^3 as the first step to solving the equation, power base form is exponential form.
The answer would be 5 years. I=PxRxT.
