Given that R= 4x + 4y Find x when y = 9 and R = 6
Give your answer as an improper fraction in its simplest form.

x = -15/2

6 = 4x + 4(9)

4x = -30

x = -30/4 = -15/2

720

step-by-step explanation:

first i did work 2nd i did work and 3rd i did work

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: