23 The equation y = 2x2 - 6x - 80 models the
elevation of a hiking trail in Death Valley. In
this model, x is the distance, in miles, from a
certain starting point, and y is the elevation, in
feet, of the trail compared to sea level.

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:

the answer is 13

step-by-step explanation:

5*5=25

12*12=144

25+144=169

169^2=13

493 would be the correct answer

step-by-step explanation: