We know that:

Then:

Therefore:

Simplifying the above result we get:

Answer:
Answer:
B
Step-by-step explanation:
B
we have

Complete the square. Remember to balance the equation by adding the same constants to each side


Rewrite as perfect squares


therefore
the answer is

$36x 40% =$14.40 was taken off
$36+$14.40=$50.40 was original price
Hope this helps
45/3=15 45-15=30 30/5=6 3x6=18 30-18=12 the answer is 12