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nikitadnepr [17]
3 years ago
14

Lee needed to make full length curtains to fit from the top of the window to the floor. The wall beneath the window had the heig

ht of 2 2/3 feet and the height of just the window measured 2 3/4 feet. How long do the curtains have to be?
Mathematics
1 answer:
worty [1.4K]3 years ago
7 0
Add the 2 together
2 2/3 + 2 3/4 you need a common denominator to add fractions
2 8/12 + 2 9/12 = 4 17/12 =
5 5!12 feer
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kvasek [131]

Answer: Raymond is correct

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

Explanation:

x = number of hours

y = total cost

The DJ does a 3-hour event for $275. This means one point is (x,y) = (3,275)

Another point is (5,425) because a 5-hour event costs $425.

Let's find the slope of the line through these two points.

(x_1,y_1) = (3,275) \text{ and } (x_2,y_2)  = (5,425)\\\\m = \frac{y_{2} - y_{1}}{x_{2} - x_{1}}\\\\m = \frac{425 - 275}{5 - 3}\\\\m = \frac{150}{2}\\\\m = 75\\\\

The slope is 75, meaning that each time y goes up by 75, x goes up by 1.

Flipped around it means each time x goes up by 1, y goes up by 75.

This means each time we add on an extra hour, the cost goes up by $75.

The DJ charges $75 an hour. Raymond is correct.

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This is just a relation and not a function, as we have more than 2 same value of x

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