The cost of diaries is £12 . Work out the cost of 7 diaries

£84

Step-by-step explanation:

1 diary = £12

2 diaries = £24

3 diaries = £36

4 diaries = £48

5 diaries = £60

6 diaries = £72

7 diaries = £84

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:

b

step-by-step explanation:

it have 5 sides and 5 identicle angle.the rest does not have the same property as b.

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