If
an implies s
ef implies i
gh implies m
then ns implies ?

the options are :
1)t
2)a
3)l
4)k

At the beginning of the year, adrian's savings account balance was \$28$28. each week, he deposits another \$15$15 into that account, and he doesn't spend any of his savings. is his savings account balance proportional to the number of weeks since the start of the year?