Pls help, and explain. Will give brainliest

Cost of 12 notebooks = $9

Ratio of number of notebooks to its price

= 12:9

= 4:3

Let the cost of 8 notebooks be x.

Then, 8:x = 4:3

=> 8/x = 4/3

=> (8×3)/4 = x

=> 24/4 = x

=> 6 = x

So, the cost of 8 notebooks is $6.

there is no question content here, but you for the free points! : d

the ratio of balloons to tables is 5: 2 and the constant variation is 5.

the equation is y=5x