Answer:
21 times
Step-by-step explanation:
Given


Required
The least number of times to land on 3
This is calculated using:



Answer:
1.35
Step-by-step explanation:
13.5/100 times 10 = 1.35
4^3 = 64
log4 64 = 3
The exponent always comes to the other side.
Answer:
(-21,-19)

Standard form
Step-by-step explanation:
We are given the equation of circle

General equation of circle:

Centre: (-g,-f)
Radius: 
Compare the equation to find f, g and c from the equation



Centre: (-21,-19)
Radius (r) 
Standard form of circle:

The centre of circle at the point (-21,-19) and its radius is
.
The general form of the equation of a circle that has the same radius as the above circle is standard form.