Answer:
5
Step-by-step explanation:
Answer: 
Step-by-step explanation:
Given logarithm expression

We need to write it as a single logarithm expression.
First we need to apply exponent rule of logs to remove 7 and 6 in front of logs.

.
Now, we need to apply product rule of logs
.

Therefore, final answer is 
The answer is D. The easiest way to see this is by using the FOIL method.
First
Outside
Inside
Last. So the first is x2, the outside is -10x, the inside is -7x, and the last is 70. So it would be x2-17x+70
8000-2600=5400
5400/12=450
monthly pavement =450
12x450+2600=8000
Unit rate is in the quantity of one.
2/1 is a unit rate
6/3 is a rate
4/1 is a unit rate