Answer:
Step-by-step explanation:

Cross multiply
5*(3x-y) = 3*(4x + 5y)
5*3x -5*y = 3*4x + 3*5y
15x - 5y = 12x + 15y
15x - 12x = 15y + 5y
3x = 20y
3x = 4y * 5

Answer:
x=28
Step-by-step explanation:
I am assuming the mean is arithmetic mean. So we first add up the numbers:
6+10+12+18+16+x
=22+10+30+x
=22+40+x
=62+x
Then since there's 6 numbers in total, we have an equation:

The answer is 28!
Have a nice day! :)
Help you with what because I don't see anything?
Answer:

Step-by-step explanation:

Answer:
D. (bottom right)
Step-by-step explanation:
A function is a relation where every input has an exact corresponding output.
So, a circle cannot be a function, neither can a vertical line.
If the graph in the top right contained a parabola the opened upwards instead of to the right, it could be a function. But in this case it isn't.
So, by process of elimination, it must be the bottom right graph!