3 years ago

Plz help me so confused

1 answer:

6 0

OK so for the first one, you have 3 TVs for 1200 dollars. The 90 dollars is a 1 time cost. so what u want to do is multiply 3 by 1200 and then add 90.

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Step-by-step explanation:

w(2w - 30) = 5400

2w²- 30w = 5400

2w² - 30w - 5400 = 0

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w= 60 w= - 45

only take the positive value

therefore w = 60

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