What number is 13 more than 80

E and her sister have $15 to spend on pizza. A medium pizza costs $11.50 plus $0.75 per topping. What is the maximum number of toppings Angie and her sister can get on their pizza?

Which expression is equivalent to 100 n^2 - 1? a) (10n) ^2 - (1) ^2 b) (10n^2) ^2 - (1) ^2 c) (50n) ^2 - (1) ^2 d) (50n^2) ^2 - (1) ^2

The height of an object seconds after it is launched is modeled by the function h (t) = -4t^2+16t+180. When will the object hit the ground?

What number - 5 = 14

Ralph sold brownies for $0.18 a piece in order to earn money to buy baseball cards. If the cards cost $0.36 per pack, and if Ralph had no money left over after buying them, what is the least number of brownies he must have sold?

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.