Functions:graph B,mapping A, Table B
Grape B is a function because it passes the vertical line test ( meaning when I draw a vertical line any where on the graph the line only touched one point),mapping A is a function because each x value has only one y value same with table.
Non function: graph A, mapping B, Table A
Graph A does not pass vertical line test so it is not a function, mapping B and Table A both have an x value that has two y values and that is not a function.
Answer:
1, 315/500 , put that into a calculator and it'll simplify for you.
2, 665/1000 put that into a calculator and it'll simplify for you.
What you do is look at the graph and whatever that line is on then that will be your answer.
We want to get out x's together on the right side of the inequality.
So, subtract <em>x </em>from both sides to get 9 < 3x.
Now divide both sides by 3 and we get 3 < x.
I personally like to have my variables on the left so we can move the 3 to the left and the <em>x</em> to the right but if we do that, we have to switch the inequality sign.
So we can rewrite this as x > 3.
40% of 38.70= 15.48
15.48+38.70= 54.18
