1) what is the standard form of the equation of the circle in the graph?
plz show how to do this.

First find the coordinate of the center:
(1,2)
Then find the value pf the radio, which is the distance 
from the center to the perimeter:
r = 4.
Given center (s,t) and radius r, the formula o the equation is the following 

We deduce the equation:

Answer: the correct answer is 10step-by-step explanation: let the number be n, then the expression becomes,then“twelve more than the quotient of a number and two, decreased by four” iswhen n=4,we substitute 4 whetever we see n to get,we simplify to obtain,we further simplify to get,therefore the correct answer is c.