Is - 12.4 a rational or irrational number?

Y-intercept is (0,6) and the slope is 3

Find the missing angle

The figure below shows a rectangular prism and a cube: A rectangular prism and a cube are drawn side by side. The length of the rectangle prism is 4 inches, the width is 3 over 4 inch, and its height is 1 and 2 over 4 inches.

Quan bought 8.6 meters of fabric. How many centimeters of fabric did he buy

Keenan made a large batch of lemonade for his team. He poured 72 cups of water into a large cooler. Then he added 1 cup of lemonade concentrate for every 2 quarts of water and mixed all of the liquids together.

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.