Answer:
The commission rate is 0.29 or 29%
Step-by-step explanation:
Hello, great question. These types are questions are the beginning steps for learning more advanced Algebraic Equations.
Before we can solve this problem, we need to create a formula that calculates the total amount of Tristen's payment. The formula would be the following,

Where:
- T is the total pay
- b is the base pay
- r is the rate of commission
- s is the total sales
Now that we have the formula we can plug in the values from the question and then solve for the rate of commission (r)
.... subtract 31,050 on both sides
.... divide both sides by 97,200

Now we can see that the commission rate is 0.29 or 29%
I hope this answered your question. If you have any more questions feel free to ask away at Brainly.