a bank has 120 customers. Each month the number of customers increases 20 members. Which equation represent the relationship between the number of months the bank has opened, x, and the total customers, y

120 + 20x = y

explanation:
while the bank started off with 120 customers so that’s how we’re going to start it off
120 +
then later there is going to be around 20 new members each month which the x will help with that because that will be the x amount of people which you can double, triple, quadruple, that amount etc
120 + 20x
and the y will equal the whatever amount you got
120 + 20x = y