The Blues Festival sold 25% of tickets at a reduced price of $30 and 50% of tickets at $40 and the rest at the door for full price of $50. With 10,000 tickets sold, how much did they earn from ticket sales in dollars?

400,000 in sales

Step-by-step explanation:

50% of 10,000 is 5,000. 5,000x40=200,000

25% of 10,000 is 2,500. 2,500x30=75,000

25% of 10,000 is 2,500. 2,500x50=125,000

add 200,000+75,000+125,000=400,000 in sales

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: