Which equation can be modeled with an exponential function a) the amount of money in a savings account where $150 is deducted every month
b) tge amount of money in saras piggy bank which she adds $10 every week
c) the amount of money in a certificate of deposit which gets 4% interest each year
d) the amount of money in jacklyns wallet which increases and decreases by a different amount each week
Please explain why it’s the answer