The rates for two homework help services are shown below. Homework SOS
Homework Lifeline
Rates for Our Services
10
35
30
Cost (5)
25
20
• Pay $25 to set up an account
with our service.
• Then pay $0.40 for each
minute of homework
assistance that you receive.
15
10
5
0 10 20 30 40 50 60 70
Minutes
Part A Which service has the greater rate of change? Which has a greater initial value?
Describe what this means in the context of the problem.
Show your work.