28 is 70% of what number?

Sales at a book store increased from 5000 to 10000. This year sales dicreased to 5000 from 10000.

Order from least to greatest - 1818, - 1.818, 1.818, 18.18

A car with a tank that holds 11.6 gallons of gasoline is using 1.45 gallons per hour. Is the tank more than half full of gasoline after 3.5 hours? Explain your answer.

Find the domain of the function (f/g) (x) where f (x) = x^2-9 and g (x) = x^2-4x+3

Dice: suppose you roll two 6-sided dice - a red one and a white one. there are 36 different outcomes in this sample space (for each of the 6 options on the red die, there are 6 options for the white one). find the requested probabilities.

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.