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Lucy is a software saleswoman. Her base salary is $1600, and she makes an additional $120 for every copy of English is Fun she sells. Let P represent her total pay (in dollars), and let N represent the number of copies of English is Fun she sells. Write an equation relating P to N. Then use this equation to find her total pay if she sells 22 copies of English is Fun.

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musiclover10045

Multiply the number of copies sold by the amount made per cop and add that to the base pay:


P = 1600 + 120N


Now to find her total pay, replace N with the number sold:


P = 1600 + 120(22)

Simplify:

P = 1600 + 2640

Add:

P = $4,240

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