Simplify this imaginary number; sqr - 8?

Determine all values of K for which the roots of the equation x squared minus 8x + k equal 0 are complex

8j^3 - 2jq^3 this is for the greatest common factor

Kelli has $450 in a savings account. She wants to have at least $300 at the end of the summer. She withdraws $15 per week. How many weeks can Kelli withdraw money from her account

Twice a number less than seven

Rename 1/2 into its proper fraction

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.