SOLUTION: A salesperson earns $350 per week plus 10% of her weekly sales. Find the sales necessary for the slaesperson to earn at least $800 in one week.

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Question 7135: A salesperson earns $350 per week plus 10% of her weekly sales. Find the sales necessary for the slaesperson to earn at least $800 in one week.
Answer by glabow(165) About Me  (Show Source):
You can put this solution on YOUR website!
To earn $800 there must be $800 - $350 in commissions. That is, 10% of sales must equal $450.
This is the equation Sales x .1 = 450
Sales+=+450+%2F+%281%2F10%29 [why?]
Sales+=+450+%2810%2F1%29=+4500