Nicholas used a \$10$10dollar sign, 10 bill to pay for a granola bar that only costs ppp dollars. How much change did Nicholas receive from the cashier? Write your answer as an expression.

Arectangular garden is 5 feet long and 3 feet wide. a second rectangular garden has dimensions that are double the dimensions of the first garden. what is the percent of change in perimeter from the first garden to the second garden?