.En la venta de navidad se vendieron 100 pinos chicos en un mes de noviembre cuando el precio de cada uno era de 80 pesos. Al acercarse la fecha los pinos aumentan de precio a 150 pesos cada uno, la demanda aumentó y se vendieron 250 pinos

256π units²   (answer b)

step-by-step explanation:

the formula for the surface area of a sphere of radius r

is             a = 4πr²

and so, if r = 8 units, then the surface area is:

a = 4π(8 units)² = 256π units²   (answer b)

a.   since the profit made in 2012 is equal to the profit made in 2014, the profit is symmetric about the line y = 120,000.

step-by-step explanation:

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