The vega family has 3 year cellphone contract. javier vega says that the family gets a total of 3x10(4) minutes of talk time to share during the three years. is havier correct

No, he is not.

He should've said:

3 years ,   12months per year,  10e4 minutes per month

So:

3 x 12 x 10000 = 36 x 10e4 = 360,000 minutes per month

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: