Last year, 336 students enrolled in a school. This year, 430 students enrolled in the same school. Determine the percentage change to the nearest whole percent, and state whether the change is an increase or a decrease.
Between 2006 and 2007, smartphone users increased from 7.7 million to 31 million. Determine, to the nearest whole percent, the percentage increase.
A bottle of hand lotion is on sale for $5.01. If this price represents a discount from the original price, determine the original price to the nearest cent.