more heeelp 20 points

Answer:
c and d
Step-by-step explanation:
like saying you lost half but gained 3 quarters. you end up have 1/4 or 1 quarter left
make the mixed number an improper fraction
9/4*9/5 = 81/20
20 goes into 81, 4 times evenly with 1 left over
4 1/20