Future value formulas?

Future value formulas?

Use the future value formula to find the indicated value. 
n = 27; i = 0.04; PMT = $68; FV = ? 

FV = $___ 

Use the future value formula to find the indicated value. 
FV = $3880; n = 12; i = 0.08; PMT = ? 

PMT = $___?

Use the future value formula to find the indicated value.

FV = 11,000; i = 0.02; PMT = $800; n = ?

n = ___

Round up to the nearest integer as needed.

The person with the lowest bid and quickest time to get these done will be rewarded this question, thank you.