Terrence Jones sells lumber. He earns 4% commission on the first $5,000, 8% on the next $5,000, and 12% on sales over $10,000. Last month he sold $38,625 worth of lumber. What was his total
commission?
FO

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step-by-step explanation:

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step-by-step explanation:

first, eliminate the parenthesis:

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+

2

−

4

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second, group like terms:

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third, combine like terms:

(

3

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4

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→

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+

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→

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  or  

step-by-step explanation:

if the four friends split the cost, p, of the pizza evenly, then each friend pays one-fourth of the cost of the pizza.

the expression is   or