Necesito la respuesta a este problema, me ayudarían mucho, gracias

John can eat 10 cookies in 1/2 hr how many cookies can he eat in 45 minutes make a proportion and solve

20 da is equal to a. 2,000 cm. b. 2 m. c. 20,000 cm. d. 20,000 mm

You are a clerk at convenience store. a customer owes 11.69 for a bag of potatoes chips. she gives you a five dollar bill. how much change should the customer receive?