The problem involves a linear equation for cost:
$y = 50x + 100$ where $x$ represents hours and $y$ represents cost in kronor.

Completing the table:

1. Given: When $x = 0$,
   $y = 50(0) + 100 = 100$

2. For $x = 1$:
   $y = 50(1) + 100 = 50 + 100 = 150$

3. For $x = 2$:
   $y = 50(2) + 100 = 100 + 100 = 200$

4. For $x = 4$:
   $y = 50(4) + 100 = 200 + 100 = 300$

Thus, the completed table should be:

Would you like an explanation of how to plot these points on the graph?

Related Questions:

1. What does the constant term $100$ represent in this equation?
2. How does increasing $x$ by 1 affect the total cost?
3. What would the cost be for $x = 3$?
4. How can you determine the slope of the line from the equation?
5. How would the equation change if the starting cost was $120$ instead of $100$?

Tip:

A linear equation in the form $y = mx + b$ has a slope $m$, which tells you how much $y$ increases per unit increase in $x$. Here, the slope $50$ means the cost increases by 50 kr per hour.