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DENIUS [597]
2 years ago
8

The solution to the equation 3(x + 2) = 2(2x + 2) is a) 4 b) 2 c) 3 d) 0

Mathematics
1 answer:
vodomira [7]2 years ago
5 0

Step-by-step explanation:

<u>Use distributive property:</u>

3x+6=4x+4

<u>Eliminate one variable:</u>

Subtract 3x from both sides.

6=x+4

<u>Subtract 4 from both sides:</u>

2=x.

B is correct.

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Answer:

total amount donated when aaron walks n miles = $2 + $3(n-1)

Step-by-step explanation:

Aaron participates in a walkathon for charity. He has a sponsor who has pledged a base donation of $2 for the first mile he walks and then a certain dollar amount for each additional mile he walks. Based on this pledge, if Aaron walks 8 miles, the sponsor will donate a total of $23 to the charity.

Write a formula that can be used to determine the amount of money this sponsor donates when Aaron walks n miles.

total amount sponsor pays = base donations + (additional miles walked after first mile x amount paid)

when Aaron walks 8 miles

additional miles = 8 - 1 = 7

23 = 2 + 7x

23 - 2 = 7x

x = 3

additional amount paid is $3

total amount donated when aaron walks n miles = $2 + $3(n-1)

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