10) a. 130
Step-by-step explanation:

F(-3)= 1
f(1)= -1
if f(x)= -2 then x=3
if f(x)= 2 then x= -5
7 miles:2.5 hours
10 miles:? hour
10×2.5÷7=25/7. As a result, It took him 25/7 hours or 3 4/7 hours to ride 10 miles. Hope it help!
Answer:
-0.44
Step-by-step explanation:
we get the mean of them( mean means the number between them)
(0.24+-1.12)÷2=-0.44