Answer:
B. 
Step-by-step explanation:
The given circle is centered at 
and has radius 3 units.
The equation is given by
where (a,b) is the center and r is the radius.
We substitute the values to obtain;
(x+1)^2
(x+1)(x+1)
x^2+x+x+1
The expression is x^2+2x+1
Answer:
45
Step-by-step explanation:
Absolute value is the distance that number is ways from zero
Answer:
76
Step-by-step explanation:
Use .25 to represent the 1/4 of a mile.
Since it is a given radius around the boulder, we would treat it as such and find the area of the circle around the boulder.
To do this, you do .25² * 3.14
.0625 * 3.14 = .19625
15/.19625 = 76 and some change, but you need to round down to 76
Answer is 76.
