When adding integers, what are the two main rules to remember?

Rule: The sum of any integer and the inverse is equal to zero. Summary: The addition of two positive integers is always positive; the addition of two negative integers is always negative. To find the sum of a positive and a negative integer, take the absolute value of each integer and subtract the values.

answer: 180

step-by-step explanation:

12-2=10

20-2=18

10x18=180

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: