Practice problem
A city raises its 7.5%7.5\%7.5% sales tax to 8%8\%8%. What is the difference in tax on a $40\$40$40 pre-tax item?
$1\$1$1
$0.50\$0.50$0.50
$0.25\$0.25$0.25
$0.20\$0.20$0.20
Type a concept, like “slope” or “photosynthesis”.