Answer:
(a) 
(b) 
Step-by-step explanation:
(a) Write and simplify an expression for the exact area of the sidewalk.
(b) Find the approximate area of the sidewalk. Use 3.14 to approximate .
(a) The sidewalk area is the difference in the area of outer circle and inner circle.
Use formula 
for the area of the circle:
The difference is
(b) Use approximation 
then
Answer:
What about
Step-by-step explanation:
SUS :0000
jp I'm pretty sure its asa. forgive me if im wrong.
Answer: (-1,3) (-2, 0.5) (0,5.5)
Step-by-step explanation:
Px+qx+py+qy=0
X (p+q)+y(p+q)=0
(p+q) (x+y)=0
Hope this helps! Have a good day/night!!
It will be a negative.
for an example: -20 for x would mqke 2x + 1 into -39 and 8x + 5 into -155. that's 116 apart, so maybe -2(8) + 5 = -11
-2(2) + 1 = -3
but that's only 8 apart, so it'd be higher.
-4(2) + 1 = -7
-4(8) + 5 = -27
BOOM
Tadaaaa,
You probably thought positive, but sometimes it's negative, you know what I mean?
