A telemarketer earns a base salary of $3,000 per month, plus an annual bonus of 2.5% of total sales above $250,000. Which function represents the annual salary for total sales of x dollars, where x is greater than $250,000?

The base salary is $3,000 per month, so the annual base salary is 12 × $3,000 = $36,000. The bonus is 2.5% of sales above $250,000, and 2.5% written as a decimal is 0.025. Therefore, the annual salary is S(x) = 12(3,000) + 0.025(x − 250,000), which is choice C.

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