Final answer:
There are 5040 ways Jose can arrange his family members in a row if order matters and he must sit in the first seat.
Step-by-step explanation:
To find the number of ways Jose can arrange his family members in a row, we need to consider the number of ways the remaining 7 people can be arranged.
Since the order matters and Jose must sit in the first seat, we can think of it as arranging 7 people starting from the second seat.
There are 7 choices for the second seat, then 6 choices for the third seat, and so on, until the last person has 1 choice for the eighth seat.
Therefore, the total number of ways Jose can arrange his family members in a row is 7! (7 factorial), which is equal to -
= 7 × 6 × 5 × 4 × 3 × 2 × 1
= 5040 ways.