Answer:
length = √ 210/7
width = √ 210
Step-by-step explanation:
Area = 30
length = x
width = 7x
30 = 7x^2
30/7 = x^2
√ 210/7 = x
y = -x + 6
Example:
-1 +6=5
6 people
12/2 is 6 people on each pie