Answer:
Part a) variable x (the number of adult tickets sold) and variable y (the number of child tickets sold)
Part b) ![10x+8y=1,276](https://tex.z-dn.net/?f=10x%2B8y%3D1%2C276)
Part c) The number of adult tickets sold was 86
Step-by-step explanation:
Part a) Name a variable for the number of adult tickets sold and name a variable for the number of child tickets sold
Let
x -----> the number of adult tickets sold
y -----> the number of child tickets sold
Part b) Write an equation in two variables to model the problem
we know that
-----> equation A
-----> equation B
substitute equation B in equation A and solve for x
![10x+8(52)=1,276](https://tex.z-dn.net/?f=10x%2B8%2852%29%3D1%2C276)
![10x+416=1,276](https://tex.z-dn.net/?f=10x%2B416%3D1%2C276)
Part c) Using your equation in Part B, solve the problem and answer the question "how many adult tickets did Anne sell?" i
we have
![10x+416=1,276](https://tex.z-dn.net/?f=10x%2B416%3D1%2C276)
Solve for x
Subtract 416 both sides
![10x=1,276-416](https://tex.z-dn.net/?f=10x%3D1%2C276-416)
![10x=860](https://tex.z-dn.net/?f=10x%3D860)
![x=86](https://tex.z-dn.net/?f=x%3D86)
therefore
The number of adult tickets sold was 86