17000 customers last years. They gain a net of 1800 customers this year. They wish to reach at least 35,000 in teh years. Estimate the number of customers they would need to reach their goal.

To estimate the number of customers they would need to reach their goal, we can add the net gain of customers this year to the total number of customers from last year: 17000 + 1800 = 18800 customers.

To reach a goal of at least 35,000 customers, they would need an additional: 35000 - 18800 = <<35000-18800=16200>>16200 customers.