Eduardo is filing his federal income tax return with the 1040EZ form, and he received two W-2 forms, with the federal income tax withheld on one being $4160, and the federal income tax withheld on the other being $370. If Eduardo received a Making Work Pay credit of $400, and if lines 9a and 9b in the Payments, Credits, and Tax section below are $0, what should he enter on line 10