Evaluate.
12 +4.3 - 15
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1.3

Step-by-step explanation:

12 + 4.3 - 15

16.3 - 15

1.3

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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  or  

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if the four friends split the cost, p, of the pizza evenly, then each friend pays one-fourth of the cost of the pizza.

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