Can someone show me how to do this problem: find the domain and write the set notation

Step-by-step explanation:

To find the domain of a rational expression like you need to find out where the denominator is 0 because you cannot divide by 0

So, take the denominator x - 3 and set it to zero and solve for x

x - 3 = 0

x = 3

So the domain is all real numbers but where x = 3. You can write this in a few different ways in set notation.

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NOTE

R = real numbers

= element of

| = such that

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Or you could write it this way

Or you could write it this way

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)

b.-4 units

all you   do is count how many times you move