Mr. katz's science class is planning a field trip. thirty people are going on the trip. there are 7 drivers and two types of vehicles, vans and cars. each van seats 6 people, including the driver, and each car seats 4 people, including a driver. if there are no extra seats in any of the vehicles, how many vans are taken?
asking again because not sure on the answer still

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:

step-by-step explanation: