Answer:

Step-by-step explanation:
We need to find 1/4 of the area of a circle with a radius of 8
Let r be radius
Area of a circle = 
Substitute r with 8
Area of a circle = 
Now, to find 1/4 of the area, we can create an equation 
The answer is 
Hope this helps :)
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Move all terms to the left side and set equal to zero. Then set each factor equal to zero.
x=2
The answer is 74 years. do 11/3=3.67. Then 3.67x20 =73.4 and since that .4 is not a full year you would have to round up to 74
X + 8 >= 18
(>= means greater than or equal to)
x + 8 - 8 >= 18 - 8
x >= 10
Y is greater than or equal to 5. It says no less than, making the equal to possible.