You are considering changing your cell phone plan . Company A offered a flat fee of $40 plus 10cents for each additional min of use.

Company B offers a monthly flat fee of $20 plus 15 cents for each additional min of use. What plan would you choose?
Equation : y=. x+
Equation: y=. x+
Decide on a reasonable starting point and ending point for the x value(quantity or time)

To decide on a reasonable starting point and ending point for the x value (quantity or time), we need more information about the specific context or usage of the cell phone plan. Generally, the starting point could be the minimum expected usage in minutes, such as zero minutes initially, and the ending point could be a reasonable maximum usage, such as 1000 minutes. However, these values can vary depending on individual needs and expected usage patterns.

To decide on a reasonable starting and ending point for the x value (quantity or time), we need to consider how many minutes of use we typically require in a month.

Let's assume that the starting point for the x value is 0 minutes, indicating no additional minutes of use beyond the flat fee.

For the ending point, let's consider a reasonable maximum usage for a typical month. Assuming we don't excessively use our cell phone, let's set the ending point to 500 minutes. This provides a good range to compare the two plans and make an informed decision.

Now we can calculate the cost for each plan using the given equations:

Plan A: y = 0.10x + 40
Plan B: y = 0.15x + 20

By substituting the values of x (minutes of use) into the equations, we can find the respective costs for each plan. Let's calculate the costs for a range of x values from 0 to 500 minutes and compare the results.