4848 inches is how long the bike will be
I'm guessing you'd combine them. And the end equation would be
81x6y
Multiply the amount per dollar offered by a bank, by the number of dollars you want to exchange it all depends on exchange rate they have it at.
C is the rigth answer because all the other three has two x values in common. :)
3 minutes and 36 seconds is the length of "Shake it off" by Taylor swift.
Source: Wikipedia