Answered

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Kramer earns $400 a week at the bookstore plus $3 for every magazine he sells. He uses the equation y = 3x + 400 to represent his earrings, where x represents magazine sales and y represents his weekly pay.

If he needs to earn $490 next week to pay for his summer field trip, how many magazines does he need to sell?

Sagot :

Answer:

30

Step-by-step explanation:

490= 400 + 3x

3x=90

x=30

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