What is 10/15 the same as

When you buy 6 compact discs for $39, you get one additional disc free. what is your cost per disc?

What is the distance between (5, - 1) and (5, - 4) ?

Simplify the expression 4*4+4*x

Which strategy would you use to find 2+8? Doubles plus 1, count on, doubles, or doubles minus 1

Greatest common factor of 25 and 35

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.