Answer:
The Inequality with integer coefficient for the total sales is 
Hence Jonathan should make total sales of at least <u>1667</u> to earn at least 100.
Step-by-step explanation:
Given:
Amount paid per week = 50
Addition amount = 3% of Total sales.
Let the Total sales be 'x'.
∴ Additional amount = 
Amount he wants to earn this week
100
We need to write the inequality with integer coefficient for the total sales and also to find the total sales.
Solution:
We cans say that;
Amount paid per week plus Additional amount should be greater than or equal to Amount he wants to earn this week.
framing in equation form we get;

Now we will make the denominator common using LCM we get;



Multiplying both side by 100 we get;

Hence The Inequality with integer coefficient for the total sales is 
On solving the above equation we get;
Subtracting both side by 5000 we get;

Dividing both side by 3 we get;

Hence Jonathan should make total sales of at least <u>1667</u> to earn at least 100.