What is being constructed based on the markings in the following

Step-by-step explanation:

Based on the markins, it's being constructed parallel lines.

When we construct parallel lines, we use a compass to have two equal angles.

The next step here is to measure the arc of the angle at vertex E, and then, with the compass we use that length to draw the equal angles at vertex C.

Therefore, the answer is parallel lines.

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: