Given:
Let f(t) be the outside temperature (F) t hours after 10 a.m.
Required:
To explain the meaning of f(1)>f(9).
Step-by-step explanation:
f(t) be the outside temperature (F) t hours after 10 a.m.
f(1) be the outside temperature (F) 1 hours after 10 a.m.
And f(9) be the outside temperature (F) 9 hours after 10 a.m.
Here

1 hour after 10 a.m the temperature is greater than 9 hour after 10 a.m.
Final Answer:
1 hour after 10 a.m the temperature is greater than 9 hour after 10 a.m.