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g100num [7]
3 years ago
12

Nathan sells posters. He starts with $1,000 and buys 9 posters for $28 each. He sells 5 posters for $42 each. He says that he ha

s about $900 after selling the 5 posters. Is Nathan’s estimate reasonable? Nathan’s estimate is reasonable. He spent about $200 and earned about $100 so he should have about $100 less than he started with. Nathan’s estimate is reasonable. He spent about $300 and earned about $200 so he should have about $100 less than he started with. Nathan’s estimate is not reasonable. He spent about $200 and earned about $200 so he should have the same amount of money as he started with. Nathan’s estimate is not reasonable. He spent about $300 and earned about $200 so he should have about $100 more than he started with
Mathematics
1 answer:
AnnZ [28]3 years ago
8 0

Answer:

Nathan’s estimate is reasonable. He spent about $300 and earned about $200 so he should have about $100 less than he started with.

Step-by-step explanation:

Lets use round #s

He buys 10 posters at $30 each, so he spent 10*30 = 300

He sells 5 posters at $40 each, so he made 5*40 = 200

So he made 200 - 300 = -100, meaning he made 100 less than he started with. 100 less from 1000 is $900.

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Answer:

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Step-by-step explanation:

See attachment for proper question

Given

f(x) = -\frac{1}{2}\sqrt{x + 3}

For

x \ge -3

Required

Determine the inverse function

f(x) = -\frac{1}{2}\sqrt{x + 3}

Replace f(x) with y

y = -\frac{1}{2}\sqrt{x + 3}

Swap the positions of x and y

x = -\frac{1}{2}\sqrt{y + 3}

Multiply both sides by -2

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