Solve and Match each equation below (#10 - #13) with the step (A, B,C, D) to solve it 10) 7w - 7 = 42
11) z7= 11
12) 7 + 7x = 42
13) 7q = -77

A) Subtract 7 from each side. Then divide each side by 7.

B)Divide each side by 7.

C) Add 7 to each side. Then divide each side by 7.

D) Multiply each side by 7.

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:

d

step-by-step explanation:

i used the pitagoras theoreme