Need help on this I didn’t study for this test I bet it’s easy but I didn’t study can someone help me on it.

The table respent two linear functions the equation respented by the first tables is given

Asales representative from a local radio station is trying to convince the owner of a small fitness club to advertise on her station. the representative says that if the owner begins advertising on the station today, the club's total number of members will grow exponentially each month. she uses the given expression to model the number of club members, in hundreds, after advertising for t months.

If x-1 and x+3 are the factors of x3+10x2+ax+b find a and b