Find an explicit formula for the geometric sequence -
d(n) =(

Step-by-step explanation:

For a geometric sequence, we have to find the explicit formula for the nth term.

If d(1) is the first term of a geometric sequence with common ratio r, then the sequence is given by :  

d(1), d(1) × r, d(1) × r², d(1) × r³, .......  

Therefore, the nth term of the sequence is given by  

and this id the explicit formula. (Answer)

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: