Respuesta :

apologiabiology
so 10% off
find 10% then subtract it from regular price (3.30)

ok so a hack is 10%=1/10
1/10 of 3.30=0.30 (move decimal place to the left 1 place)
0.30=10%
then subtract
3.30-0.30=3

answer is sale price=$3.00