If three dozen cookies cost $9, what is the cost per cookie? a) $0.25 b) $0.50 c) $2.25 d) $3.00

A is the answer Hope this helps

Hey,
So since a dozen is 12, three dozens is 36.
If 36 cookies = 9 $ we have to divide both sides of equation with 36.
so 1 cookie = $ and 
So a cookie equals to $ and since equals to 0.25, the answer is A) $0.25
Hope this helps, and don't forget to choose the brainliest answer please :)

Rounding decimals is very similar to rounding other numbers. if the hundredths and thousandths places of a decimal is forty-nine or less, they are dropped and the tenths place does not change. for example, rounding 0.843 to the nearest tenth would give 0.8. , your welcome !