Need help plz and thx

0.40 km

Step-by-step explanation:

2.79-2.39=0.40

400 meters or 0.40 km

Step-by-step explanation:

All you have to do is subtract the before from the after so 2.79-2.39=0.4

Then you convert the km in meters which is 400 .

1 km is 1000 meters so 0.4 x 1000=400

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:

it will cost dollar $540

the living room is 3 which means if we divide 325/3 then we get $108

therefore if 1part of the living room cost $108 and 3 costed $325

then total 5part of the room will cost 5*108 which gives $540