Solve for c. a(b-c)=d (make an equation that solves c)solve for f. c=8πfb

a(b-c)=d solve for c

divide both sides by a

b-c = d/a

subtract both sides by b

-c = d/a - b

divide both sides by negative 1

c = -d/a + b

c = b - d/a

c=8πfb solve for f

divide both sides 8πb

c/8πb = f

or

f = c / 8πb

168

step-by-step explanation:

i am pretty sure that the answer is 168

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: