Solve using the Quadratic Formula: a) -7x^2 + 7x + 1 = -8

b) -6x - 1 + 5x^2 = 8x^2

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a reflection across the x axis and a 90 degree rotation left and right.

the answer is:

the correct option is the option b.

to calculate the surface area of the right cylinder, we need to use the following formula:

from the picture we know that:

so, substituting and calculting we have:

hence, we have that the correct option is the option b.

have a nice day!