How to do scientific notation

Which of the following numbers are square numbers? Select all that apply. 2 6 8 9

Use an area model to solve. 2 2/3 x 1 1/3?

What is multiple of 4? A. 620 B. 626 C. 734 D. 891

Yesterday 6/7 of the 63 students gave their speeches how many gave their speeches

Jennifer babysat for 7 hours and earned $52.50. What is her hourly rate of pay?

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.