Answer:
The first option.
Because we're solving for the price of each gallon, x will represent the cost of each gallon. Since 8.4 is the total amount of gallons, multiply 8.4 and x to get $23.94. Solve for x by dividing 23.94 to get $2.85 per gallon. To check this, substitute 2.85 for x into the equation: 8.4 (2.85) = 23.94
Answer:
C
Step-by-step explanation:
That means that for x=3 the y has a value of 1.
Answer:
y=2x-5
Step-by-step explanation:
y=mx+c
mx=slope
In this case, the slope is already given to you which means the m=2.
y=2x+c.
The coordinates are (14, 23) and when you put -5 into c, the line goes through the coordinates (14, 23).
Hope this helps!
Answer: (3.46, 3.62)
Step-by-step explanation:
The formula to find the confidence interval for population mean is given :-
, where n = sample size.
= Two-tailed t-value for significance level of 
and degree of freedom df= n-1.
= sample standard deviation.
As per given , we have
mm
s= 0.20 mm
n= 25
Significance level 
Since population standard deviation is not given , it means the given problem has t- distribution.
Two-tailed t-value for significance level of 
and degree of freedom df= 24:
95% Confidence interval for population mean:
Hence, the 95% two-sided confidence interval for the mean glass thickness = (3.46, 3.62)
Answer:
C
Step-by-step explanation:
