There are two methods I know. hope it'd help :)
Answer: a child ticket costs $14.50
Step-by-step explanation:
x=children ticket
x+4.50=adult ticket
3 children and 2 adult
3x+2(x+4.50)=81.50
3x+2x+9.00=81.50
5x+9.00=81.50
5x+9.00-9.00=81.50-9.00
5x=72.50
5x/5=72.50/5
x=14.50
Answer:
A
Step-by-step explanation:
...
Answer: 2000
Step-by-step explanation:
55 multiplied by 20
is equal to 1,100
100 multiplied by 20
is equal to 2000
2000 ppl were surveyed
Answer:
5600 square feet is the area.
Step-by-step explanation:
Perimeter will be = 300 feet
Length of the fence enclosure must be at least 80 feet.
Width of the fence enclosure must be at least 40 feet.
Let x be the length and y be the width of the court.
We get following constraints:


If we calculate the area, we get 
And for the perimeter we get:
⇒ 
Now look at the graph attached, we get point (80,70) as the possible solution.
So, the maximum area occurs when the dimensions are 80 feet by 70 feet.