Question

Deirdre's babysitting service charges $20 plus $10 per hour. Janine's babysitting
service costs $30 dollars plus $5 per hour. How many hours will it take for
Janine's service to be cheaper?

Please help

Answer 1

It would take 3 hours for Jaines to be cheaper.

One hour:
D- 20+10(1)=30
J- 30+5(1)=35

Two hours:
D- 20+10(2)=40
J- 30+5(2)=40

Three hours:
D- 20+10(3)=50
J- 30+5(3)=45