You can purchase 2 sodas for 3 dollars, how much does 6 sodas cost?

It costs $9

Step-by-step explanation:

Lets look at the ratio:

2/3

We need x:

6/x

Make an equation using the butterfly method:

3(6) = 2x

Simplify:

18=2x

Divide both sides by 2:

x=9

It costs $9

$4

Step-by-step explanation:

She charges $16 upfront

$4x + $16

The $16 charges upfront is the $16 in bold.

The $4x is the amount she charges depending on the hours.

The number of hours is x. The amount she charges per hour is $4.

$4