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rosijanka [135]
2 years ago
9

7EE2 7. In August, Cory begins school shopping for his triplet daughters. One day, he bought 3 packages of socks for $8 each and

3 pairs of shoes for d dollars each. Which pair of expressions represent the total amount Cory spent
Mathematics
1 answer:
NeTakaya2 years ago
4 0

Answer:

3(8) + 3d

24+3d

Step-by-step explanation:

I am not sure which two answer choices you have provided for you but these two expressions work for this problem

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(–2x + 4) + ( x – 11)
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Answer:

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Step-by-step explanation:

(-2x+4)+(x-11)

-2x+4+x-11

-x-7

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2 years ago
Sophia has an ear infection. The doctor prescribes a course of antibiotics. Sophia is told to take 500 mg doses of the antibioti
julsineya [31]

Answer:

see below

Step-by-step explanation:

Dosage= 500 mg

Frequency= twice a day (every 12 hours)

Duration= 10 days

Number of dosage= 10*2= 20

residual drug amount after each dosage= 4.5%

We can build an equation to calculate residual drug amount:

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After first dose residual drug amount is:

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After second dose:

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As per the equation, the higher the t, the greater the residual drug amount in the body.

Maximum residual drug will be in the body:

  • d= 20*22.5= 450 mg at the end of 10 days

Maximum drug will be in the body right after the last dose, when the amount will be:

  • 500+19*22.5= 927.5 mg
5 0
2 years ago
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