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2 years ago

NEED HELP ASAP

1 answer:

5 0

Well, we know that Stanley has to wait 8 years. Since we are given a rate in half-years, we convert that 8 to 16 half - years.

Then, we write an equation where x is the original amount.

x * 1.075^16 = 10000

Then, we solve.

That gives us about $3,143.87.

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Answer:

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2 years ago

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30 PTS!!!!! Cole needs to include at least 11 mg and at most 22 mg of iron in his diet each day. Cole plans to eat multiple ba

ser-zykov [4K]

Answer:

See explanation

Step-by-step explanation:

Part A: If Cole eats 3 bananas each day. These 3 bananas contain $3\cdot 0.3=0.9$ mg of iron.

Let x be the number of vitamins Cole takes. Each whole vitamin contains 4 mg of iron, then x vitamins contain 4x mg of iron.

The total amount of iron Cole takes is

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Cole needs to include at least 11 mg and at most 22 mg of iron in his diet each day, so

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The smallest number of vitamins - 3, the greatest number of vitamins - 5.

Part B: Cole continues to eat 3 bananas each day. He pays $\$2\cdot 7=\$14$ for bananas per week.

If Cole spends a total of $20 on bananas and vitamins this week, then he spent $20 - $14 = $6 on vitamins.

Let x be the number of vitamins Cole takes this week.

First 10 vitamins are free, then x - 10 vitamins each cost $0.50 (he pays an additional dollar for every 2 additional vitamins he purchases) and they cost

$\$0.50(x-10)$

This amount of money is exactly $6, so

$0.50(x-10)=6\\ \\5(x-10)=60\\ \\x-10=12\\ \\x=22$

This means Cole takes 3 vitamins per day (the whole number) and he is able to meet his iron requirement every day this week, based on answer in Part A.

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2 years ago

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Answer:

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