What is 392 rounded to nearest ten

Friendly numbers and mental math

What is the domain of the function f (x) = sq rt of 9?

Which a, b, and c values should be substituted into the quadratic formula for this equation? x2 - x 5 + 1 = 0

Three consecutive odd integers whose sum is 243

Each student in me beardons art class

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.