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Genrish500 [490]
2 years ago
15

PLS HELP ME, PLS THIS IS DUE FIRST CORRECT ANSWER GETS BRAINLIEST​

Mathematics
1 answer:
AysviL [449]2 years ago
5 0

Answer:

Step-by-step explanation:

The first choice is correct

The rate is 20 per dog, thus we get the equation:

c= 20d

However the first dog is free, so the equation becomes

c = 20(d - 1)

And he also has a walking fee of 85 dollars and thus the equation becomes

c= 85 + 20(d-1)

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We have to add numbers without a calculator.

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We can substract the last digit from one number and add it to the other one. The result will be the same, but they will become easier to add.

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numbers in the set n = 9

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