Cho tam giác ABC cân có AB =Ac =5cm , BC=8cm kẻ AH vuông góc vs BC ( H thuộc Bc) a, CM HB=HC b, Tính độ dài AH
c,

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:

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i think the answer would be c