Let the admission price for adults be 'x' and that of children be 'y'
Equation Formation.
2 x + 3 y = 80............equation(i)
3 x + y = 99.............equation(ii)
y = 99 - 3 x
2 x + 3(99 - 3 x) =80
2 x +297 - 9 x = 80
- 7 x = -217
x = 31
y = 99 - 3x
y = 99 - 3×31
y = 99 - 93
y = 6
Answer ⇒ Adults = $31
Children = $6
<h2>
Answer with explanation:</h2>
The function represents the area of a circle(A) is given by :-
To determine the area of a circle whose radius is 11 inches. , we put the value of r=11 inches, we get
Now, we put 
in the above function , we get
Sorry I'm not sure how to solve this one but maybe you have to multiply
