Mr. Martinez decided to invest his money in a mutual fund. This table gives the amount of money Mr. Martinez had in his account over the course of 42 months . The table can be modeled using an exponential function. Months 6 12 18 24 30 36 42
Account value $1,339 $1,798 $2,408 $3,225 $4,321 $5,792 $7,766
What function best represents the data?

A) y=75 x 1.22x

B) y=75x

C) y=1000+1.34x

D) y=1000 x 1.05x