Please help me with this linear/non-linear drag and drop (20 points)

$1.8

Step-by-step explanation:

let x equal the money that she spend on the folders

let y equal the cost of 1 folder

let z equal the number of folders she bought

We got:

y + z = x

We know that :

y = 0.15

z = 12

So,

y * z = x

0.15 * 12 = x

1.8 = x

So x = 1.8

Alicia cost in total of $1.8 to buy folders

Hope this help you :3