E spans the exspression

5(x+3)

Expanding the expression 5(x+3), we get:

5(x+3) = 5 * x + 5 * 3
= 5x + 15

So, E = 5x + 15.

To expand the expression 5(x+3), you can use the distributive property:

5 * x + 5 * 3

This simplifies to:

5x + 15