What is the range for this set of data?

7, 15, 12

Ian has 12.2 ounce bottle of ketchup. He uses 1/20 of the ketchup every time he has a buffalo burger. How many ounces of ketchup are left after Ian has eaten 4 buffalo burgers.

Ava bought a rectangular rug for her hallway. The rug is 2/3 yd wide and 2 3/4 yd long. What is the area of the rug as a mixed number in simplest form?

Rapid Rental Car charges a $30 rental fee, $15 for gas, and $0.65 per mile driven. For the same car, Capital Cars charges $35 for rental and gas and $0.75 per mile.

Beth is using triangular shaped pieces to cover the front of a pillow. The base of each triangle is 9 inches and the height of each triangle is 6 inches.

The question. 7. The Waverly Brush Company issued 4,000 shares of common stock worth $200,000.00 total. What is the par value of each share?

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.