Make a line and drag it over the shape if you see more than 2 points over the line then it is not a function if you see only 1 point over the line it is a function
If 217 is the 100%, how much percentage is 21?
well
![\bf \begin{array}{ccllll} amount&\%\\ \text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\ 217&100\\ 21&x \end{array}\implies \cfrac{217}{21}=\cfrac{100}{x}\implies x=\cfrac{21\cdot 100}{217} \\\\\\ x\approx 9.6774\%](https://tex.z-dn.net/?f=%5Cbf%20%5Cbegin%7Barray%7D%7Bccllll%7D%0Aamount%26%5C%25%5C%5C%0A%5Ctext%7B%5Ctextemdash%5Ctextemdash%5Ctextemdash%7D%26%5Ctext%7B%5Ctextemdash%5Ctextemdash%5Ctextemdash%7D%5C%5C%0A217%26100%5C%5C%0A21%26x%0A%5Cend%7Barray%7D%5Cimplies%20%5Ccfrac%7B217%7D%7B21%7D%3D%5Ccfrac%7B100%7D%7Bx%7D%5Cimplies%20x%3D%5Ccfrac%7B21%5Ccdot%20100%7D%7B217%7D%0A%5C%5C%5C%5C%5C%5C%0Ax%5Capprox%209.6774%5C%25)
now, the $93 item, let's say 93 is the 100%, then
![\bf \begin{array}{ccllll} amount&\%\\ \text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\ 93&100\\ x&9.6774 \end{array}\implies \cfrac{93}{x}=\cfrac{100}{9.6774}](https://tex.z-dn.net/?f=%5Cbf%20%5Cbegin%7Barray%7D%7Bccllll%7D%0Aamount%26%5C%25%5C%5C%0A%5Ctext%7B%5Ctextemdash%5Ctextemdash%5Ctextemdash%7D%26%5Ctext%7B%5Ctextemdash%5Ctextemdash%5Ctextemdash%7D%5C%5C%0A93%26100%5C%5C%0Ax%269.6774%0A%5Cend%7Barray%7D%5Cimplies%20%5Ccfrac%7B93%7D%7Bx%7D%3D%5Ccfrac%7B100%7D%7B9.6774%7D)
solve for "x".
having all the necessary or appropriate parts:
The band earned $1,200.
1. Subtract the flat fee 1,200-700 =500
2. 500 is what just the band made. Divide that by .16 (16%) to get the total ticket amount... 500 divided by .16 = 3,125
The total ticket amount was $3,125.
![{6x}^{2} - 24 = 0 \\ = > 6( {x}^{2} - 4) = 0 \\ = > 6 {((x)}^{2} - {(2)}^{2} ) = 0 \\ = > 6(x - 2)(x + 2) = 0 \\ = > 6(x - 2) = 0 \: \: \: or \: \: 6(x + 2) = 0 \\ = > 6x - 12 = 0 \: \: \: or \: \: \: 6x + 12 = 0 \\ = > x = 2 \: \: \: or \: \: \: x = - 2](https://tex.z-dn.net/?f=%20%7B6x%7D%5E%7B2%7D%20%20-%2024%20%3D%200%20%5C%5C%20%20%3D%20%20%3E%206%28%20%7Bx%7D%5E%7B2%7D%20%20-%204%29%20%3D%200%20%5C%5C%20%20%3D%20%20%3E%206%20%7B%28%28x%29%7D%5E%7B2%7D%20%20-%20%20%7B%282%29%7D%5E%7B2%7D%20%29%20%3D%200%20%5C%5C%20%20%3D%20%20%3E%206%28x%20-%202%29%28x%20%2B%202%29%20%3D%200%20%5C%5C%20%20%3D%20%20%3E%206%28x%20-%202%29%20%3D%200%20%5C%3A%20%20%5C%3A%20%20%5C%3A%20or%20%5C%3A%20%20%5C%3A%206%28x%20%2B%202%29%20%3D%200%20%5C%5C%20%20%3D%20%20%3E%206x%20-%2012%20%3D%200%20%5C%3A%20%20%5C%3A%20%20%5C%3A%20or%20%5C%3A%20%20%5C%3A%20%20%5C%3A%206x%20%2B%2012%20%3D%200%20%5C%5C%20%20%3D%20%20%3E%20x%20%3D%202%20%5C%3A%20%20%5C%3A%20%20%5C%3A%20or%20%5C%3A%20%20%5C%3A%20%20%5C%3A%20x%20%3D%20%20-%202)
Hope you could get an idea from here.
Doubt clarification - use comment section.