Terry has a fixed salary and earns commission per sale. Which equation would represent his total earnings based on the number of sales made?

The scenario describes a situation where Terry has a fixed salary and earns an additional amount based on the number of sales he makes. The key is to recognize that his total earnings consist of two parts: his fixed salary and the commission earned from sales.

In this case, the fixed salary Terry receives is represented by the flat amount of $250. This amount does not change regardless of the number of sales he makes. Furthermore, for each sale he completes, Terry earns a commission. The question indicates that this commission is $5 for each sale.

The total earnings can therefore be expressed mathematically as the sum of the fixed salary and the total commission earned from the sales. This leads to the equation: Total Earnings = Fixed Salary + (Commission per sale × Number of Sales). Substituting in the values provided, we get Total Earnings = $250 + $5 * Sales.

This correctly represents Terry's earnings structure, which is a combination of his fixed salary and the income generated from sales commissions. The other options do not accurately capture this structure, either by omitting the fixed salary or misrepresenting the relationship between the fixed and variable components of Terry's earnings.