Bunuel wrote:
A salesclerk is paid a minimum weekly salary of $210 plus a commission equal to 10% of the value of sales she makes in excess of $3,000 for the week. If the sales-clerk wishes to earn at least $370 for a week, what is the minimum value of sales she must make for that week?
(A) $1,600
(B) $3,700
(C) $4,600
(D) $6,700
(E) $6,910
I think the logic-based approaches above are faster, but if you preferalgebra :
Let x = dollar amount of sales needed
She gets no commission for sales up to $3,000.
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