Answer:
The markup for the shoes is 20 percent.
Step-by-step explanation:
C. 8
It seems that she runs two more laps each day, so:
day 1- 3
day 2- 5
day 3- 7
day 4- 9
day 5- 11
day 6- 13
simple patterns baby
66
7(12)+3(-6)
84-18=66