Jeanette's sister charges $5.50 per hour before 9: 00 pm for babysitting and $8 per hour after 9: 00 pm. she finished babysitting at 11: 00 pm and earned $38. at what what time did she began babysitting?

Hey there! :D Jeanette's sister started at 5:00 PM. To get that answer, here's what I did:   From 5-9 PM, she earned $22. That's because 5.50 x 4 = 22, then from 10-11, she charged $8 which is 8 x 2 = 16 + 22 = $38. Again, she started at 5 PM.

Hope it Helps and makes sense! :D