Answer:
See attached picture.
Step-by-step explanation:
Graph the equation and test solutions to create a shaded region.
Answer:
B. y ≥ 1/3 x - 1
Step-by-step explanation:
y = mx + b
b = - 1,
m = rise/ run = 1/3
y = 1/3 x - 1 is equation of the line.
Shading is over the line, so
y ≥ 1/3 x - 1
Answer: (36.7, 39.3)
Step-by-step explanation:
Confidence interval for population mean:
, where n= sample size, 
= sample mean, 
= population standard deviation, 
= critical z value.
Given: n= 40 , 
Critical z-value for 90% confidence = 1.645
Then, required confidence interval:
Hence, a 90% Confidence Interval = (36.7, 39.3)
Answer:
see below
Step-by-step explanation:
Package A
2n + 3m = 280
Package B
2n + 5m = 320
Using elimination to eliminate n since the coefficient is the same
Subtracting the A equation from the B equation
2n + 5m = 320
-2n - 3m = -280
------------------------
2m = 40
Divide by 2
2m/2 = 40/2
m = 20
Now finding n
2n+3m = 280
2n +3(20) = 280
2n+60 = 280
Subtract 60 from each side
2n +60-60= 280-60
2n = 220
Divide by 2
2n/2 = 220/2
n = 110
The cost per night is 110 and the cost per meal is 20
