Simple. just do this:
1000x=1600
x=1600÷1000
x=1.6
each newspaper is $1.60
1.)Gcf of <em><u>8</u></em><em><u>9</u></em><em><u> </u></em><em><u>and</u></em><em><u> </u></em><em><u>7</u></em><em><u>6</u></em>

2)step <em>2</em>

3.)step 3

4.)answer

The first one, I need more info
second, 5x10^-1
third, 7.26x10^-3
fourth, 90.1x10^-6
Answer:
it is a direct variation because k is proportionally constant
Step-by-step explanation:
direct variation is y=k.x
inverse variation is k=y.x or y=k/x
6/9 = 2/3
8/12=2/3
12/18=2/3
20/30=2/3
i even add a graph for you
So sorry I got it wrong and don't know how to delete