Answer:
#2 option: 
Step-by-step explanation:


= 
Answer:
2ITR/KVJFCIUYBDTR67E4VHJN, BHJYUG76T89O;LXCS,DVTI9R0OPE;'
Step-by-step explanation:
For this case we have the following equation:

The variables are:
t: time in hours
d (t): distance traveled in miles.
We evaluate the distance traveled after 4 hours.
So we have that for t = 4:
Answer:
d (4) = 68
This means that after 4 hours Joanna cycled for 68 miles total
Answer:
3 hours
Step-by-step explanation:
39 miles/ 13 miles per hour means 3 hours. SIMPLE!
Now I don’t know if this is right but I’m pretty sure it’s just 24 with simple subtraction