The second one is

This determines the combined number of dogs and humans'
Answer: The required condensed expression is 
Step-by-step explanation: We are given to fully condense the following logarithmic expression assuming that all variables represent positive numbers :

We will be using the following properties of logarithms :

Therefore, from expression (i), we get

Thus, the required condensed expression is 
Answer:
6.5 = x
Step-by-step explanation:
(x - 4)2 = 5
2*x + 2*-4 = 5
2x - 8 = 5
2x = 13
x = 6.5