What is 12-42 simplified

In 2002, the Bookstore sold 1000 paperback books and 1500 hardback books. In 2003, the store sold 15% more paperback books and 5% more hardback books than sold in 2002.

What's - 7 x 7/3 in a fraction

Isaac draws a regular octagon and rotates it about its center. Which angle measures can Isaac rotate the regular octagon through to map it onto itself? Select each correct answer. 30° 45° 90° 120° 135° 180°

29/4 into mixed number

3. expand the binomial, (x^2-y^2) ^3 4. find the fourth term of (a-b^2) ^5

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.