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il63 [147K]
3 years ago
10

Kelly and Greta are asked to write an equation for the scenario below. "One person was able to plant 4 trees in the same amount

of time that 5 people working together were able to plant 20 trees." The girls agree that x represents the number of people working and y represents the number of trees planted. Kelly wrote the equation y = one-fourth x, and Greta wrote the equation y = 4 x. Which person is correct, and why?
Mathematics
2 answers:
Elina [12.6K]3 years ago
8 0

Answer:

D

Step-by-step explanation:

sub to my yt clizey

padilas [110]3 years ago
5 0

Answer:

Greta is correct. The answer is y = 4x

Step-by-step explanation:

This is because one person is able to plant four trees and five people are able to plant 20 in the same amount of time which means 4 trees is to 1 person. In other words if you substitute the values into the equation you will see that x = 1 in the first scenario and x = 5 in second scenario.I will work out the second scenario below.

y = 4x (where y = 20)

20  = 4(x)

\frac{20}{4} = \frac{4x}{4}

5 = x

OR

y = 4x (where x = 5)

y = 4 * 5

y = 20

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Answer:

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Step-by-step explanation:

4 0
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For her parents' anniversary party, Ellie is considering using one of two venues. A hotel in
kompoz [17]

The hotel is $250 plus $25 per person so the equation would be

y= 25x + 250

(Y is the total cost and x is the number of people)

the restaurant is $100 plus $40 per person so the equation would be

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What we want to know is which x value would make the y values equal to each other. So you can just replace the "y" in one equation with the other equation:

25x + 250 = 40x + 100

and then solve...

1. subtract 100 from both sides

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2. subtract 25x from both sides

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3. divide both sides by 15

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you can check by plugging 10 into the original equations

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and

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