Which rational numbers is not equivalent to the others. 75%,3/4,0.75,7/50

Find the number of positive three-digit even integers whose digits are among 9, 8, 7,5, 3, and 1.

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.

Melanie is buying a bathing suit that costs 39.99. she is given a discount at the cash register of $6.00 when she scratched 15% off on a game piece for a store promotion. what will the sale price of melanie’s bathing suit be?