And can you give an explanation on how you got the answer too?

b.

Step-by-step explanation:

When you replace x in a parent function by x - h, the function shifts h units horizontally.

Here, x is replaced with x + 4.

x + 4 = x - (-4)

x - (4) = x - h, so h = -4.

The shift is 4 units to the left.

b.

..

step-by-step explanation:

a complex number is a number that can be expressed in the form a + bi, where a and b are real numbers, and i is a solution of the equation x2 = −1. because no real number satisfies this equation, i is called an imaginary number. has no real solution, since the square of a real number cannot be negative.