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Arturiano [62]
3 years ago
11

A new bank account is opened on week 1 with a $200 deposit. After that first week, weekly deposits of $55 are made in the accoun

t. If y represents the total deposited into the account and x represents the number of weeks, which function rule describes this situation?
Mathematics
2 answers:
inysia [295]3 years ago
7 0
Y=55x+200, you multiply the number of weeks by the amount of money, and add 200 because they started with that.   
Nina [5.8K]3 years ago
5 0

Answer: y = 200+ 55x

Step-by-step explanation:

Hi, to answer this question we have to write an equation using the information given:

So, the total deposits (y) are equal to the week 1 deposit (200) plus the product of the amount of the deposits per week (55) and the number of weeks (x).

Mathematically speaking:

y = 200+ 55x

Feel free to ask for more if needed or if you did not understand something.

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A cone-shaped container has a height of 9 in. and diameter of 2 in. It is filled with a liquid that is worth $2 per cubic inch.
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If f(x) = 4x^3 + Ax^2 + 7x - 1 and f(2) = 3, what is the value of A?<br> (^ = powers)
bekas [8.4K]

Answer:

A = -10.5

Step-by-step explanation:

To find the value of "A", you can plug x = 2 and f(x) = 3 into the equation. This will allow you to simplify and find the value of "A".

f(x) = 4x³ + Ax² + 7x - 1                     <---- Original equation

3 = 4(2)³ + A(2)² + 7(2) - 1                 <---- Plug x = 2 and f(x) = 3 into equation

3 = 4(8) + A(4) + 14 - 1                      <---- Solve 2³ and 2²

3 = 32 + A(4) + 14 - 1                        <---- Multiply 4 and 8

3 = 45 + A(4)                                    <---- Combine like terms

-42 = A(4)                                         <---- Subtract 45 from both sides

-10.5 = A                                         <---- Divide by 4

If A = -10.5, the final equation would look like this:

f(x) = 4x³ - 10.5x² + 7x - 1

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Answer: Read below!

Step-by-step explanation:

You would want to start off by dividing 75 by 1,400. That will get you your answer.

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3 years ago
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