1.
{3x+9y=75
{8x+5y=67
2. elmination
{24x+72y=600
-
{24x+15y=201
57y=399
y=7
8x=67-35
x=4
Senior citizen ticket cost $4
child ticket cost $7
<h3><u>MEAN</u></h3>
Mean is the average. To find the mean of a data set, you have to add all the numbers and divide the sum by the amount of numbers you added.
<em>In this equation, you have 8 numbers. That means you will be dividing by 8. </em>
The first thing you need to do is add all the numbers. Add:

Now that you have added all the numbers and got the sum, divide by 8. Remember that you will be dividing by 8 since you added 8 numbers.
Divide:

The mean is 66
<em>If you have any questions, feel free to ask in the comments! :)</em>
Answer:
22 units
Step-by-step explanation:
Add 12, 4 , and 6 and you will get 22
Answer:
Only A and C are functions.
Step-by-step explanation:
X-values cannot repeat in the case of functions.
Answer:
B
Step-by-step explanation: