After school, ann babysits to make some extra money. she charges the parents $5 to show up, then an additional $4 per hour that she’s there. write an expression for the money she makes per week if she babysits 3 days a week

Let the number of extra hours she baby sits every day is x.

For x hours she will make:  4*x = 4x

For three days a week = 3*4x = 12x.

The base of $5 for showing up.

For 3 days a week of showing up = 3*  $5 = $15 

Total =  12x + 15

Therefore total amount for 3 days a week = $(12x + 15), where x is the number of hours spent every day.

21, i'm pretty sure it's right lol