A and b are both accurate
For a:

which is true
For b:

which is also true
How dos3es it want it in decimsal form there are a couple ways in decimal form at list i was tought
Answer:
Answer: you've gotten it answered? lmk if you haven't and you're waiting on one
Step-by-step explanation:
I hope this helps you
813,60 = ?%.1800
?/100.1800=813,60
?=813,60/18
?=45,2
Answer:
i don't know if it is correct or not, sorry if i were mistaken