SOLUTION;
![\sqrt[]{-36}\text{ = }\sqrt[]{(36)(-1)}\text{ = }\sqrt[]{36}\text{ x }\sqrt[]{-1\text{ }}\text{ = 6i}](https://tex.z-dn.net/?f=%5Csqrt%5B%5D%7B-36%7D%5Ctext%7B%20%3D%20%7D%5Csqrt%5B%5D%7B%2836%29%28-1%29%7D%5Ctext%7B%20%3D%20%7D%5Csqrt%5B%5D%7B36%7D%5Ctext%7B%20x%20%7D%5Csqrt%5B%5D%7B-1%5Ctext%7B%20%7D%7D%5Ctext%7B%20%3D%206i%7D)
Recall that the square root of the negative one is "i" meaning that it is a complex number and not a real number.
Okay well the starting is 28 dollars, right. But since there is a 20 percent discount, you have to turn 20% to a decimal. That means moving the decimal sign twice to the left to make it .20. From the it would be .20*28, that should equal 5.6. Now, that 5.6 is the amount you have to take away, it is the price of the sale. From then, you subtract which is 28-5.6 which should be 22.4. From that 22.4 you now take away two dollars and then it should be 22.4-2 which should be 20.4. Now that is your answer, 20.4.
