Billy has $3.00. Bubble gum costs $.30. He bought four pieces. How much money does Billy have left? plz help me

It’s C silly , if you think abt it when u multiply by 3 he bought 4 pieces so it’ll be 1.20

Billy has 1.20 left

Explanation:

You do 3 multiplied by 4 which is 120

explanation:

b,bacteria convert nitrates

into nitrogen gas.

d,plants and animals take in

and use nitrogen compounds.

e,bacteria break down waste    

products and return nitrogen  

to the soil.

a,bacteria convert atmospheric

nitrogen to ammonia.

c,bacteria convert ammonia

to nitrites and nitrates.

"a.) well–developed vascular system."