Hey, please see the attachment below and see the 2nd question, please find the answer!

a) (8×10^-3)×(2×10^-4)= 16×10^-7= 1.6×10-6

b) (6×10^2)÷(3×10^-5)= 2×10^(2+5)= 2×10^7

2^y = ln 5, or   y(ln 2) = ln 5.   solving for y,   y = (ln 5) / (ln 2).   y=5

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: