Answer:
18 children
Explanation:
Given
![240 = 12x +8y](https://img.qammunity.org/2021/formulas/mathematics/high-school/4iah01yen6zfi58ms04m7o89kixt9qx614.png)
Required (missing part of the question):
Number of children that will be able to go to the zoo if 8 adult tickets are purchased
The graph is missing. However, the question can be solved without the graph.
From the question and equation, we can deduce the following:
- x represents adults
- y represents children
So, when 8 adult tickets were sold.
This means
![x = 8](https://img.qammunity.org/2021/formulas/mathematics/middle-school/u8axvd1l05hlglvuo1fwq01ipnz41ts1az.png)
Substitute 8 for x in
![240 = 12x +8y](https://img.qammunity.org/2021/formulas/mathematics/high-school/4iah01yen6zfi58ms04m7o89kixt9qx614.png)
![240= 12 * 8 + 8y](https://img.qammunity.org/2021/formulas/mathematics/high-school/zekeviywf88d2cksc732zrvrcuu101thsx.png)
![240= 96+ 8y](https://img.qammunity.org/2021/formulas/mathematics/high-school/icqf07h5n1a6491lrv8rcum6qo2sf6lhdq.png)
Subtract 96 from both sides
![240 - 96 = 96 - 96 + 8y](https://img.qammunity.org/2021/formulas/mathematics/high-school/2xfp7yvla4e2bfk91ctsjpgf2i11sy5k9s.png)
![144 = 8y](https://img.qammunity.org/2021/formulas/mathematics/high-school/qslvfm1yq9tkdjvmcr4g7z22blqs38bzju.png)
![8y = 144](https://img.qammunity.org/2021/formulas/mathematics/high-school/64kgk8uf1fejux1xpbss1yl5lrs0xp5dsq.png)
Solve for y
![y= (144)/(8)](https://img.qammunity.org/2021/formulas/mathematics/high-school/d0921vbr1bouvl67291kmbg83qddtxnwo2.png)
![y= 18](https://img.qammunity.org/2021/formulas/mathematics/high-school/ebza1vz9r326ntch0tohat1ymk18fm3nmm.png)
This means that 18 children will be able to go