Find the range of the data

A man builds a model plane that is a scale model of an original. The original plane is 150 feet in length. If the scale model uses 4 inches for every 50 feet, the model is _inches in length

The majority of Mr. Smith's students made very high scores on this test. The curve of the distribution of scores on this test would most likely be:

Is 11/18 greater than 5/6

Fred bought seven adult and two student tickets for $16. John paid $7 for one adult and five student tickets. Individual costs are:

Y - 2x is less than or equal to - 3

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.