What has to be true about the side and
angle measures of two triangles in order
for the two triangles to be congruent?
Only sides must be congruent
There is no relationship between the sides
and angles of congruent triangles.
Side and angle measures must be
congruent
Only angles must be congruent

The answer is side and angle measures must be congruent! Hope this helped :)

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: