A colony of 500 bacteria doubles in size every 490 minutes. What will the population be 980 minutes from now?

What will be the end result for the taxpayer who filed his federal income tax return using the 1040ez form shown belowa he'll owe $173b he'll receive a refund of $173c he'll owe $3921d he'll receive a refund of $3921

Which angle is the smallest? also give me an explanation so i can complete it to other questions as well, : )

A. 10.8 cm^2 b. 5.4 cm^2 c. 7.4 cm^2 d. 21.6 cm^2