If x=3 what is the value of the expression -2x(2 x^3+3x^2-5x)

The value would be -396

Step-by-step explanation:

In order to find this, put in 3 for every value of x and then  simplify.

-2x(2 x^3+3x^2-5x)

-2(3)(2(3)^3+3(3)^2-5(3))

-6(2(27) + 3(9) - 15)

-6(54 + 27 - 15)

-6(66)

-396

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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