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AVprozaik [17]
3 years ago
13

Jerry’s loan had a principal of $22,000. He made quarterly payments of $640 for nine years until the loan was paid in full. How

much did Jerry pay in interest?
Mathematics
1 answer:
Leto [7]3 years ago
8 0

Answer: $1040

A = P + I

A = Total

P = Principal

I = Interest

First find the total amount

A = 640(4)(9)

A = 23040

Plug In the Numbers

23040 = 22000 + I

Substract 22000 on both sides

I = $1040

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Answer:

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Round 1.965 to the nearest tenth. please
Alona [7]
I’m pretty sure it’s 2.0 have a nice day!
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A painter charges an initial fee of $50 and $30 for each hour of labor. Write a linear function to determine the total cost. How
il63 [147K]
The initial fee of $50 is essentially the y intercept because this is the value when x = 0 (x is the number of labor-hours). So b = 50.

The slope is m = 30 because each increase of 1 hour leads to the cost bumping up by 30 dollars. In other words, slope = rise/run = (change in cost)/(change in hours) = 30/1

So we plug m = 30 and b = 50 into the y = mx+b formula to get y = 30x+50

Replace y with f(x) to get f(x) = 30x+50

The linear function for the cost is f(x) = 30x+50

Note: Some books may use other letters (instead of x and f(x)), but the idea is still the same

Once you know the cost function, you replace x with 4.5 to find the amount it will cost to have a painter work for 4.5 hours.

f(x) = 30x+50
f(4.5) = 30*4.5+50
f(4.5) = 135+50
f(4.5) = 185

It will cost 185 dollars to have the painter work for 4.5 hours
7 0
3 years ago
taylor has an online bank account that charges a fees of 2.3% on each deposit. what is the fee for a deposit of $62.50 each. rou
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You need to divide by the number 2.3 and 62.50 and then round to the nearest cent


4 0
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The lines 3y + 1 = 6x + 4 and 2y + 1 = x - 9 are ?
harkovskaia [24]

Answer:

lines are not perpendicular or parallel

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