475 round to the nearest ten

Of the following numbers, which one is prime, 32,42,29,15!

Which of the following expressions has the greatest value? A 3 - 7 + (-10) B 3 + 7 + (-10) C 3 + 7 - (-10) D 3 - 7 - (-10)

Is 1/-4 equivalent to - 5 divided by 20

Kara drove 36.9 miles before her car broke down. If Kara lives 45.55 miles away from work, how much further does she need to travel?

Hank has a board 1.75 meters long. He used 0.8 meter to build the walls of a birdhouse. He used 0.4 of what is left for the floor. He needs 0.6 meter for the roof. Dies he have enough wood for the roof? Explain

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.