George plans to purchase a new scooter for $8000 and to keep it until it is worth a fourth of its original price. the value of the scooter is give by v = 8000( 1 8 )t, where v is the value of the scooter and t is the number of years that have passed. if george finds that he can buy the scooter on sale for $6895, how should he change the value equation? a) replace the 8000 with 6895. b) replace the 8000 with 1 6 . c) replace the 1 8 with 6895. d) replace the 1 8 with -6895.