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wariber [46]
3 years ago
9

A laptop computer is purchased for $2700. Each year, it’s value is 70% of its value the year before after how many years will la

ptop computer be worth $500 or less
Mathematics
1 answer:
n200080 [17]3 years ago
3 0

<u>Answer:</u> 5 years!

<u>Reasoning:</u>

Year 1: 2700 x .70=1890

Year 2: 1890 x .70= 1323

Year 3: 1323 x .70= 926.1

Year 4: 926.1 x .70= 648.27

Year 5: 648.27 x .70=453.79

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Step-by-step explanation:

For part A) we just have to plug in 0 for x and solve for y until we find the equation that says 3 is the value for y when x is 0. For purposes of speeding up the process the correct answer is D. I will show how to check for it now.

The equation: y = (x + 1)(x+3)

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The equation: 3x(x-3) = 0

Now plug in x for 0 and solve:

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3*3(3-3) = 0\\

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This is also true so that means this is the correct answer.

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