Answer: 
Step-by-step explanation:
Remembert that, by definition:
→ 
Then, you can rewrite
in exponential form:

Now you can solve for the variable "x":
Add 6 to both sides of the equation:


And finally you must divide both sides of the equation by 2, then:

Answer:

Step-by-step explanation:
We need to find an expression that is equivalent to 14:56.
So,

So, the equivalent expression of the given expression is
.
Answer:
500
Step-by-step explanation:
that is the procedure above
80km/h because km is more than miles