Simplify 2^3 x 2^18 I am checking to see if I am correct.

Step-by-step explanation:

2^3 x 2^18

2^3+18 = 2^21

B would be the correct answer.

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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)

when studying polynomials, you often hear the terms zeros, roots, factors and x x the multiplicity of a zero is important because it tells us how the graph of the let's look at the graph of a function that has the same zeros

step-by-step explanation: