What is the value of - 9 r - 7 when r = 2?

I have 1/3 of a brownie. If 5/6 of a brownie fills one plate, how many plates can I fill?

Pedro buys 4 books at the fair for$7each what is the total amount pedro spends on4 books? Use the letter b to represent the total amount pedro spends and then solve the problem

Amy bought a 2-gallon container of orange juice last week for $6.00. If she drinks 1 cup a day every day, how long will the orange juice last? About how much does each cup cost? Explain your thinking.

How many grams are in 3.1kg

A quadrilateral has three angles that measure 90º, 80º, and 74º. Write an equation to find the 4th angle measure (x). Find the unknown angle measure, showing your work.

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.