Two of the angles of a triangle are of measures 30 degree and 35 degree each. the triangle is #1 an acute angled triangle. #2 an obtuse angled triangle. #3 a right angled triangle. #4 (cannot be determined because measures of all the three angles are not known)

The third angle = 180 - 30 - 35 = 115 degrees

so its obtuse

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: