Answer:
7 units
Step-by-step explanation:
The formula for a circle is:
, where (x_1, y_1) is the center of the circle and r is the radius.
Right now, we see that r^2 = 49, so to find r, we square root 49 and get 7.
Thus, the answer is 7 units.
Hope this helps!
(4x - 4) - 3 simplified = 4x -7