What is the shape with 9 sides

Alvin has 25 coins that values $4.00, some are quarters and some are dimes. What is the ratio of the numbers of dimes to the number of quarters.

A city has 4 new houses for every 8 old houses. If there are 24 new houses in the city, how many old houses are there?

Write 2800 in standard form

A pizza restaurant has 15 toppings. How many possible ways can an 8-topping pizza be created? Assume each topping is used only once.

Sean counts by from 15 to 35? Which number does Sean count

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.