As you are walking down a path, you see a sign telling the path has a 17% grade (ie., a rise of 17 metres for a horizontal change of 100m). Which of the following expressions will calculate the angle between the path and horizontal? a. tan -1 (17/100) b. sin-1 (17/100) c tan (17/100) d. sin (17/100)

b. astronomers

6 hours 48 min

step-by-step explanation:

68÷5=13.6

13.6×30=408min=6 hours 48 min.

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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: