What is the greatest common factor of 21, 24 and 27

3

Step-by-step explanation:

The factors of 21 are: 1, 3, 7, 21

The factors of 24 are: 1, 2, 3, 4, 6, 8, 12, 24

The factors of 27 are: 1, 3, 9, 27

Then the greatest common factor is 3.

first, we define the variables:

x: number of years after 1950

f (x): amount of vinyl sold.

then, with the variables defined, we have:

68594 vinyl records were sold in 1958 > f (8) = 68594

91299 vinyl records were sold in 1961 > f (11) = 91299

38720 vinyl records were sold in 1952 > f (2) = 38720

161743 vinyl records were sold in 1967 > f (17) = 161743

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step-by-step explanation: