Response:
Second option: 
Third option: 
Detailed explanation:
The missing graph has been provided.
The attached image illustrates the graphing of the following system of linear equations:

Notice the intersection of the lines.
According to the definition, if lines in a system of equations intersect, then there is only one solution. This implies that the intersection point is the solution to that system. This can be expressed as:

Represented by "x" for the x-coordinate and "y" for the y-coordinate.
Here, it's noticeable that:
- The x-coordinate of the intersection point lies between
and
.
- The y-coordinate of the intersection point is situated between
and
.
Therefore, you can conclude that the forthcoming points (Refer to the options given in the exercise) are potential approximations for this system:

Answer:
310
Step-by-step explanation:
The highest possible number is achieved when each household has just one appliance. When calculating the total, we find ...
60 + 85 + 70 + 95 = 310
The maximum possible number of families is 310.
Answer
The resultant number is 412630
Every confidence interval correlates with a specific z value. As the confidence interval expands, so does the corresponding z value.
You can compute the confidence interval using the formula:

Here

represents the mean, z is the respective z value, s denotes the standard deviation, and n indicates the sample size.
Standard deviation is simply the square root of variance:

For a confidence interval of 95%, the z value is <span>1.960.
</span>Now, we can compute the confidence interval for our income: