Is 0.734734734 rational or irrational

What is the value of y in the sequence below? 2, y, 18,-54,162, ... -6 -3 3 6

The equation represents an ellipse. What are the vertices of the ellipse? (6, - 3) and (6, - 11) (6, - 5) and (6, - 9) (10, - 7) and (2, - 7) (8, - 7) and (4, - 7)

The markings on a standard ruler?

To make chocolate ice cream, you need about 3/8 pound of chocolate. How many pounds of chocolate would you need to make four batches of ice cream?

At the popular restaurant Fire Wok, 55%, percent of guests order the signature dish. What fraction of guests order the signature dish?

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.