Select the correct answer. Consider these shapes. Shape A 3x2 + 2 by 7x² - 4x + 8
Shape B 3x²+2
If shape B is a square, which polynomial represents the difference of the areas of shape A and shape B?
OA. 32x2 + 8x + 28
OB. 8x2+8x+ 12
O C. 30x4 + 12x3 + 40x2 + 8x+ 20
OD. 12x4 + 12x3 + 26x2 + 8x + 12

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:

- both graphs increase on their domain.

- the graphs of both functions have the same x-intercept.

- neither graph has a y-intercept.

x² + 3x + 7 = 0       [ax² + bx + c]

a = 1

b = 3

c = 7

quadratic formula:

    (+/- is this ±)

plug in the numbers into the variables

your answer is a