8 in scientific notation?

Whitch is greater, 5/8 or 9/10

What adds to - 9, and multiplies to - 70?

What is 2,722 round to the nearest thousand

A rain gutter is to be made of aluminum sheets that are 12 inches wide by turning up the edges 90 degrees.

Carlina cannot use both of the tickets she bought for the rock concert to be held Saturday night. She sold one of the tickets to Kristen for 75% if the original ticket price.

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.