Translate the Sentence to an Algebraic Inequality

Multiple Choice

Translate the sentence to an algebraic inequality.
-A salesperson has two job offers. Company A offers a weekly salary of $400 plus commission of 10% of sales. Company B offers a weekly salary of $800 plus commission of 5% of sales. What is the amount of sales above
Which Company A's offer is the better of the two?

A) $8100
B) $4000
C) $8000
D) $16,000