Mr Hayes sold 7/9 of a crate of grapefruit. He sold 3/5 of another crate of grapefruit. How many crates of grapefruit did mr Hayes sell in all?

the correct answer is 45x

9×5=45 then add the x

step-by-step explanation:

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:

(4x+15)^2

step-by-step explanation:

factor using the perfect square rule