How do you convert this equation to standard form?
x² + y² + 18x + 32 = 0

(x + 9)^2 + y^2 = 49 is the standard form.

Step-by-step explanation:

x² + y² + 18x + 32 = 0

(x + 9)^2 + y^2 = 49

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:

y=-2.5x+12.5

step-by-step explanation:

5y=2x+10

y=0.4x+2

slope=-2.5

5=-2.5*3+b

b=12.5