Negative 0.09 repeating as a fraction

The price of a packet of salt goes up by 9 cents. The old price is four-fifths of the new price. Find the old and new prices.

Find the length of the hypotenuse of a right triangle with legs of 9cm and 12cm

A rectangular page is to contain 24 square inches of printed material. The margins at the top and at the bottom are each 1.5 inches. The margins at the left and at the right are each 1 inch.

clayton has a recipe for 60 cookies that uses 4 cups of flour. he only have 3 cups of flour. how can clayton detriemines how many cookies he can make.

Monthly private school tuition based on the average number of weeks in attendance is predicted using the least-square regression line, ŷ = 265.9 + 93.

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.