Answer:
The sample mean is of 266.5 dollars.
Step-by-step explanation:
Sample mean:
The sample mean is given by the sum of all values in the sample divided by the number of values.
In this question:
12 values.
The sum is:
115 + 370 + 250 + 93 + 540 + 225 + 177 + 425 + 318 + 182 + 275 + 228 = 3198
The sample mean is:
The sample mean is of 266.5 dollars.
Answer:
we have
f(x)=x-6f(x)=x−6 -----> equation A
This is a linear equation with slope m=1m=1 and a y-intercept equal to -6−6
g(x)=x+6g(x)=x+6 -----> equation B
This is a linear equation with slope m=1m=1 and a y-intercept equal to 66
The function f(x) and g(x) are parallel lines
we know that
h(x)=f(x)+g(x)h(x)=f(x)+g(x)
Substitute
h(x)=x-6+x+6h(x)=x−6+x+6
h(x)=2xh(x)=2x
This is a linear equation with slope m=2m=2 that passes through the origin ( represent a direct variation)
Using a graphing tool
see the attached figure
