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1+2b−13=12−4b−2b1+2b-13=12-4b-2b for bb.

answer:

b = 6

Step-by-step explanation:

1+2b-13 = 12-4b-2b

Combine like terms

2b-12 = 12-2b

Add 2b to both sides

4b-12 = 12

Add 12 to both sides

4b = 24

Divide both sides by 4

b = 6

3.76%

step-by-step explanation:

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: