Respuesta :
Answer: A
Step-by-step explanation: she already put in the 250 which is a one time thing while the 40 has a variable since it can be put it infinite many times
A,
if t = months,
then 40t = $40 for any given number of months
add $250 because of the initial deposit
if t = months,
then 40t = $40 for any given number of months
add $250 because of the initial deposit