Answer:
Answer of this is... D... 2x-3
You first multiply the outside exponents into the numbers in the parentheses.
When you have an exponent being multiplied directly to another exponent, you multiply the exponents together.
For example(because I am a bad explainer):


When you divide an exponent by an exponent, you subtract the exponents
For example:

When you have a negative exponent, you move it to the other side of the fraction to make the exponent positive
For example:



You can think of it like this if you want:
Now multiply the outside exponents into the exponents in the parentheses
Divide 27 and 9

Your answer is 
From the angle bisector theorem
15/3 = (4x+1)/5
5 = (4x+1)/5
4x+1 = 25
4x = 24
x = 6
Answer:
$47.988-$47.99
Step-by-step explanation:
20/100=0.20
39.99x0.20=7.998
39.99+7.998=47.988