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Ray Of Light [21]
3 years ago
14

Colin maxed out his credit card at $4,000

Mathematics
2 answers:
Svet_ta [14]3 years ago
8 0
It wants to know the interest payed over 15 months, he payed $300 each month and of that 300, there was 12.35% of it taken out. if you do the math...
300 x (12.35/100)    it comes out to 37.05      that means that each month he payed $37.05 to interest when he made his payments, and at this point we can ignore the $300 he pays each month and focus on the interest alone, we know he is going to pay the same amount for 15 months which means he pays $37.05 towards interest 15 times over, with some simple math...
$37.05 x 15      which comes out to $555.75
meaning over the total 15 months he payed $555.75 total in interest
Thus your answer is $555.75

The other person who answered wasnt exactly wrong it's just the fact that if your paying $300 a month you dont pay it a little each day you pay the full $300 at one time each month, so the balance will never actually hit $0 it will blow past it, meaning you can't do the math how he answered it, you have to reverse it and figure it out from the interest first.

Hope This Helps.
FinnZ [79.3K]3 years ago
7 0
So Colin is required to pay $300 for 15 total months in order to get his credit card balance down to $0.

In order to find this total, we need to take the amount he is going to pay per month ($300) and multiply is by the total number of months that he is going to be paying that amount (15):

$300 * 15 months = $4,500

The total amount of money that he is going to pay after his card balance reaches $0 is $4,500.

However, Colin only maxed out his credit card to $4,000 - the rest of the money is due to interest. So to find this amount, we take the total amount that he paid ($4,500) and subtract it from the total amount he initially maxed out his card with ($4,000):

$4,500 - $4,000 = $500

The amount of interest that Colin has paid when his credit card balance is $0 is $500.
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3 years ago
I need help seeing what I did wrong
Makovka662 [10]

Answer:  The two roots are x = 3/2 and x = -2

=========================================================

Explanation:

You have the right idea so far. But the two numbers should be 3 and -4 since

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The -1 being the coefficient of the x term.

This means you need to change the -3x and 4x to 3x and -4x respectively. The other inner boxes are correct.

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Refer to the diagram below to see one way to fill out the box method, and that helps determine the factorization.

If we place a 2x to the left of -2x^2, then we need an -x up top because 2x*(-x) = -2x^2

Then based on that outer 2x, we need a -2 up top over the -4x. That way we get 2x*(-2) = -4x

So we have the factor -x-2 along the top

The last thing missing is the -3 to the left of 3x. Note how -3*(-x) = 3x in the left corner and -3*(-2) = 6 in the lower right corner.

We have the factor 2x-3 along the left side.

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The two factors are (2x-3) and (-x-2) which leads to the factorization (x+3)(-x+2)

The last thing to do is set each factor equal to 0 and solve for x

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The two roots are x = 3/2 and x = -2

8 0
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igor_vitrenko [27]

Answer:

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That means Robin sold 2 times x or 2x

So y = 2x

The sum of bars Renee, x,  and Robin, 2x, sold together are no less than 45

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