Answer:
35
Step-by-step explanation:
Add them together and then divide
8000 is 1000 times larger than 8
The answer is B I have provided a picture to show the solving steps
Answer:
t= 3 years
Step-by-step explanation:
So far we have 2 useful relationships
and 
Now, clearing t

I apply logarithm
years
Done
.10x + .05y = 4.50
x + y = 30
Is the formula