Answer:
Jack pay during the first year of the lease is $1908.
Step-by-step explanation:
Given : Jack leased a car for $159/month for 36 months. The amount due when he signed the lease was $2399.
To find : How much did Jack pay during the first year of the lease?
Solution :
Jack leased a car for $159/month.
We have to find the amount Jack pay during the first year of the lease.
1 year = 12 months
In, 1 month he pay $159
In, 12 months he pay 
Therefore, Jack pay during the first year of the lease is $1908.