Answer: 24
Step-by-step explanation:
The ratio of sandcastles to kites was 3 to 5 so if 15 kites were spotted that meant that the 5 was multiplied by 3 so then we multiply the 3 by 3. Now there are 9 sandcastles and 15 kites so now we add 9 to 15 to figure out how many items were seen in all. Nine added to 15 equals 24 which means that 24 items were seen in total.
Do you need me to simplify ... or what?
Please let me know so I can help you (:
Graphs can be used to represent functions.
See attachment for the graphs of: <em>y =x - 2, y = 0.4x - 2, y =-x - 2</em>
The function is given as: 
When k = 1,
We have:
----- substitution property of equations

So, the equation is:
when k = 1
When k = 0.4,
We have:
----- substitution property of equations

So, the equation is:
when k = 0.4
When k = -1,
We have:
----- substitution property of equations

So, the equation is:
when k = -1
See attachment for the graphs of:
,
and 
Read more about graphs and functions at:
brainly.com/question/11804653