9 dollars is 4 dollars.
Let's find the percent form of the discount
=> 4 dollars / 9 dollars = 0.44
Now, let's convert it to percentage
=> 0.44 * 100% = 44%
Thus the discount is 44%
It's an isosceles triangle, so the angles at the base are congruent:

The triangle XYW is a rectangular triangle.
We know that the sum of the measures of angles in a triangle is 180°.
Therefore we have the equation:

Answer: 73
68.01
A quotient is the answer to two numbers being divided.
Meaning 68.0052÷12 is 68.01