The only complete pattern is the middle one
we see that 38-29=9
so the middle number minus the first number equals the third number
for the last row
21-1=20 so you have 1 21 20
for the first one
17- ?=37
54-17=37 54 17 37
Answer:
the number of miles per hour
Step-by-step explanation:
Answer:
c = 2 or c = -2
Step-by-step explanation:

Hope this helps.
The answer is n=10 I already did this
You can buy 23 salads because the group wants 12 instead of 15 15-12=3