please solve

Q13. Suppose that a person's monthly income is $12,000. Also, suppose that this person's money demand function is given by M\" = 0.45 f) A. What is this person's annual demand for money when the interest rate is 5% and_15%? B. Suppose that the interest rate is 7.5%. Inpercentage terms, what happens to this person's demand for money if her yearly income increased by 25%? C. Suppose that the interest rate is 5%. In percentage terms, what happens to this person's demand for money if her yearly income reduced by 50%