Answer:
C
Step-by-step explanation:
Area of circle = 
15/2 = 7.5
7.5 = radius
Plug 7.5 into the formula:
= 176.71
Closest answer to 176.71 = 176.625
Answer would be C.
Answer:
11
Step-by-step explanation:
30-2(7+2)-1
PEMDAS says parentheses first
30-2(9)-1
Then multiply
30 -18 -1
Then subtract
12-1
11
The first and the second one.
-2*-2=4
Absolute value of -4 is 4
(X,Y) 0=X and 0=Y if you plug in 0 for X and 0 for Y in Y=8X it will be 0=8(0). 8 times 0 is 0 which is the equation