Answer:
A)
Step-by-step explanation:
Bulletin boards can be in all shapes and sizes. There is no correct or incorrect answer to this problem.
I think its A please dont get mad if its wrong
Step 1: Add the two equations together to get just one equation.
2x + y + x - y = 5 + 1
Step 2: Simplify.
3x = 6
Step 3: Divide by 3 on both sides.
3x / 3 = 6 / 3
x = 2
Therefore, the answer is x=2
Answer: (1500.66,1599.34)
Step-by-step explanation:
Confidence interval for population mean:

,where
= Sample mean , n= Sample size, z* = critical two tailed z-value ,
= population standard deviation.
As per given , we have
n= 16
square feet
square feet

Critical z-value = 
Confidence interval for population mean:

Required confidence interval: (1500.66,1599.34)