Answer:
x = 0 x = 1/9
Step-by-step explanation:
square both sides
x = 9x²
subtract x from both sides
9x² - x = 0
factor out x
x (9x-1) = 0
x = 0,
9x-1 = 0, 9x = 1
x = 1/9
For the first city, the 95% confidence interval would be:
28,900 +/- 2300 x 3 = 28,900 +/-6900$
For the second city, the 95% confidence interval would be:
30,300 +/- 2100 x 3 = 30,300 +/- 6300$
Negative, i think
