Answer:
15% discount is
15/100 × 18.99 = 2.85
The sale price with discount is 18.99 - 2.85 = 16.14
It's a little hard to tell without more information as to what you are learning, but could it be the Golden Ratio? I believe it might have been discovered in ancient Greece...
Below length is square root of 2*3
hypotenuse is 2
Answer:
It has one solution which is a=1