What is a counterexample to explain who is correct regarding 3/4 and 6/8 of a pizza

What are the means of the following proportion 3/15=12/60

Solve the proportion 8/13 = 20/x

You should evaluate a product's quality based on a. accessories and maintenance. c. performance and money. b. safety and time. d. performance and durability.

Your employer has asked you to start working overtime and has offered to pay $18 per hour for every hour you work beyond forty hours a week. The wage rate for each of the first forty hours will continue to be the usual $15 per hour.

Ronald is preparing lemonade for his friends. To make 6 cups of lemonade, he needs 1 cup of lemon juice. To make 24 cups of lemonade, he needs to proportionally increase the amount of lemon juice to cups

A newspaper reporter wants to know how popular the hobby of bird watching is in the city. He asked people at the local bird refuge if they watched birds as a hobby. Which of the following best explains whether the reporters data is valid or not?

I am very confused on how to figure out if y = 3/4x is proportional?

Alison wants to buy a mountain bike for $339.12. If she saves $28.26 each month, in how many months will she be able to buy the bike?

At 12 o'clock the temperature was 7°C. The temperature decreased by - 20°C. What is the new temperature?

Ashleys rentals charges $27.50 per hour to rent a surfboard and a wetsuit. Darlas surf shop charges $23.25 per hour to rent a surfboard plus $17 extra for a wetsuit.