Shea and her best friend kelly both babysit during the summer. shea charges $4 per hour plus a $3 service fee, while kelly charges $3.50 per hour plus a $6 service fee. solve the system by substitution to find the number of hours, h, and the amount of pay, p, where they each earn the same amount

6 hours 

The First hour- Shea made $7 and Kelly made $9.50
The Second hour- Shea made $11 and Kelly made $13
The third hour- Shea made $15 and Kelly made $16.50
The fourth hour- Shea made $19 and Kelly made $20 
The fifth hour- Shea made $23 and Kelly made $23.50
And the sixth hour- Shea made $27 and Kelly made $27 

Hope that was helpful

3x+9+4x+x=8x+9that's the answer for your question.